Carbs: how much you need, and what cutting them really does
Cutting carbohydrate is sold as the shortcut to weight loss, yet in adults with overweight or obesity, with calories matched, a ketogenic diet beat a higher carbohydrate diet by 3.3 lb (1.49 kg), on evidence its authors rated low certainty. What ketogenic diets move reliably is blood fat in both directions. Two 2026 meta-analyses of 53 and 62 trials found triglycerides down by about 20 mg/dL and LDL cholesterol up by about 8 mg/dL.
Every statement on this page is tied to a source. The badge shows what kind of evidence stands behind it. Evidence A is a meta-analysis or systematic review. E is the position of an expert body without its own analysis. Click "source" for the exact sentence we took it from. How we verify →
A · 33B · 9C · 5D · 3E · 20
70 statements. A meta-analysis · B randomized trial · C observational · D laboratory · E position of an expert body. A page leaning on E is reporting consensus rather than weighing trials, and you can see that before you read a word of it.
We read the trials on this one. Do carbs cause inflammation? → Every estimate on one scale, with the search protocol shown.
We read the trials on this one. Does a low-carb diet improve blood sugar and insulin resistance? → Every estimate on one scale, with the search protocol shown.
We read the trials on this one. Does a low-carb diet affect cholesterol and triglycerides? → Every estimate on one scale, with the search protocol shown.
We read the trials on this one. Does a low-carb diet cause constipation? → Every estimate on one scale, with the search protocol shown.
What it does in the body
- The American recommended carbohydrate intake of a hundred and thirty grams was calculated from how much glucose the brain is thought to need. — children over 1 year and adults of all ages and both sexes, plus pregnancy and lactation Evidence E source
- Europe has rejected sixty-six carbohydrate claims and allowed eight, and the one it allowed for the brain is the same reasoning the American intake figure rests on. — general population, EU food labeling Evidence E source
- The carbohydrate figure on a label is never measured, it is what is left after everything else has been weighed. — not applicable, this is the definition of a labeling measurement Evidence E source
How much you need
- The World Health Organization looked at the question of how much carbohydrate to eat and decided not to answer it. — adults and children aged 2 years and older, worldwide Evidence E source
- A wide band of carbohydrate intake, from about forty to seventy percent of energy, goes with lower death rates than anything outside it. — general adult populations Evidence E source
- What the World Health Organization does recommend about carbohydrate is where it comes from and how much fiber comes with it. — adults, and children and adolescents from 2 years old Evidence E source
- The label ceiling for added sugars is fifty grams a day for anyone over four, and half that for toddlers. — United States, four labeling population groups Evidence E source
- The American carbohydrate reference value is being rebuilt right now, so the figure our pages print is provisional. — United States and Canada, all age groups Evidence E source
- Net carbs is not a regulated term, and manufacturers were documented defining it in conflicting ways. — United States packaged food labeling Evidence E source
- American food data names the column honestly: carbohydrate by difference, portion after portion. — United States food supply, portion sizes as eaten Evidence E source
How well your body absorbs it
- Letting boiled potatoes go cold turned some of their starch into a form the body does not absorb, and vinegar cut the blood sugar spike further. — healthy adult volunteers, Lund University, Sweden Evidence B source
- There are no cooking retention factors for carbohydrate, because the American table covers vitamins and minerals and not macronutrients. — not applicable, statement about the limits of a reference source Evidence E source
Who is most likely to fall short
- ADA 2026 does not recommend very low-carb eating in pregnancy or breastfeeding, for children, for people with kidney disease or for people with or at risk of disordered eating. — pregnant or lactating people, children, people with kidney disease or disordered eating Evidence E source
- A 2024 meta-analysis of 41 trials with 1,379 adults found LDL rose by 41 mg/dL on low-carb diets in trials of lean adults, did not change at BMI 25 to 35, and fell slightly at BMI 35 and above. — adults consuming under 130 g/d carbohydrate in randomized controlled trials, mean duration 19.4 weeks Evidence A source
- In normal-weight adults, a 2023 meta-analysis of 3 RCTs found ketogenic diets raised LDL by 42 mg/dL (1.08 mmol/L) and apoB by 0.35 g/L. — normal-weight (body mass index < 25 kg/m2) adults in randomized controlled trials Evidence A source
- In a six-month randomized trial of 40 young people with type 1 diabetes, a low-carb diet lowered HbA1c by 0.7 points versus 0.1 on a Mediterranean diet. — adolescents and youths with type 1 diabetes, median age 18, 70% female Evidence B source
- A 2025 meta-analysis of trials and prospective cohorts in drug-resistant epilepsy found constipation was the most common side effect of the modified Atkins diet, in 31% of patients. — children and adults with drug-resistant epilepsy on ketogenic diet, modified Atkins diet or low glycemic index treatment Evidence A source
- A 2020 Cochrane review of 13 trials with 932 people found vomiting, constipation and diarrhea were the most commonly reported side effects of ketogenic diets for drug-resistant epilepsy. — 711 children (4 months to 18 years) and 221 adults with drug-resistant epilepsy Evidence A source
What the evidence does and does not show
- When calories are matched, a ketogenic diet beat a higher carbohydrate diet by about one and a half kilograms, and the evidence behind that is weak. — adults with overweight or obesity Evidence A source
- Swapping carbohydrate for fat at equal calories improves some blood markers and worsens another, so there is no single winner. — non-medicated, disease-free adults Evidence A source
- The World Health Organization examined the glycemic index, found it inconsistent, and refused to build guidance on it. — adults and children Evidence E source
- A year after the World Health Organization set the glycemic index aside, a meta-analysis of cohorts each over a hundred thousand people linked high glycemic index diets to more diabetes, heart disease and death. — adults across ten prospective cohorts, six from the USA, one from Europe, two from Asia, one international Evidence C source
- Replacing refined staples with whole grain improved fat and glucose markers in adults heading toward diabetes. — adults at high risk of type 2 diabetes Evidence B source
- The 2022 Cochrane review of 61 RCTs with 6,925 adults found low-carb weight-loss diets probably make little to no difference to LDL over 1 to 2 years compared with balanced-carbohydrate diets. — overweight and obese adults without and with type 2 diabetes in weight-reducing diet trials Evidence A source
- A 2026 network meta-analysis of 47 trials in adults with heart risk factors found ketogenic diets raised LDL the most, by 17 mg/dL (0.43 mmol/L) against a low-fat diet. — adults aged 35-75 years with at least one CVD risk factor in randomized clinical trials with macronutrient targets Evidence A source
- In type 2 diabetes, a 2024 meta-analysis of 6 RCTs lasting over 12 months found low-carb diets raised HDL and lowered triglycerides without changing LDL. — adults with type 2 diabetes in RCTs of low-carbohydrate diets for more than 12 months Evidence A source
- In a 12-month RCT of 148 adults, a diet under 40 g of carbohydrate a day raised HDL by 7 mg/dL and cut triglycerides by 14 mg/dL more than a low-fat diet. — 148 men and women without clinical cardiovascular disease and diabetes Evidence B source
- In the 2-year DIRECT trial of 322 adults with obesity, the total-to-HDL cholesterol ratio fell by 20% on a low-carb diet and by 12% on a low-fat diet. — moderately obese subjects (mean age, 52 years; mean BMI 31; male sex, 86%) Evidence B source
- A 2021 BMJ meta-analysis of randomized trials in type 2 diabetes found low-carb diets cut HbA1c by 0.47 points more than control diets at six months, and the gap halved to 0.23 points at 12 months. — adults with type 2 diabetes; LCD under 130 g/day or under 26% of energy, at least 12 weeks Evidence A source
- In the same 2021 meta-analysis, low-carb diets brought 32 more people per 100 to an HbA1c below 6.5 percent at six months, but the gain was small and not significant when remission also required stopping diabetes drugs. — adults with type 2 diabetes in RCTs of at least 12 weeks Evidence A source
- A 2025 meta-analysis of 27 randomized trials in 2,870 adults with type 2 diabetes found low-carb diets lowered HbA1c by 0.29 points and fasting glucose by 7.12 mg/dL, with the largest effect at 3 months. — adults with type 2 diabetes, RCTs of 12 weeks or more, 7 Eastern and 20 Western Evidence A source
- A 2024 meta-analysis of six randomized trials lasting over 12 months found no significant HbA1c difference between long-term low-carb and control diets in type 2 diabetes. — adults with type 2 diabetes, LCD interventions longer than 12 months Evidence A source
- A 2025 network meta-analysis of 80 trials in 9,232 people with type 2 diabetes ranked a very low-carb, high-protein, calorie-restricted diet first for HbA1c, 1.0 to 1.79 points lower at six months. — patients with type 2 diabetes in RCTs of exact macronutrient compositions Evidence A source
- A 2025 meta-analysis of 149 randomized trials in 9,104 adults found carbohydrate-restricted diets lowered the insulin resistance score HOMA-IR by 0.54, most in women, people with overweight and people with type 2 diabetes. — adults in 28 countries, with and without diabetes; ketogenic, low- and moderate-carbohydrate diets Evidence A source
- A 2025 meta-analysis of 10 trials in 499 people with diabetes found higher-fiber, higher-carb diets lowered HbA1c by 0.50 points more than lower-carb, lower-fiber diets. — people with diabetes, 98% type 2, RCTs changing both fiber and carbohydrate Evidence A source
- The American Diabetes Association's 2026 Standards advise considering less carbohydrate for some adults with diabetes to improve blood sugar, naming limiting processed foods as one effective way. — adults with diabetes Evidence E source
- A 2026 meta-analysis of 25 randomized trials in 2222 adults found that low-carbohydrate diets did not lower CRP, IL-6 or TNF-alpha any more than low-fat diets over a median 24 weeks. — adults in RCTs of low-carbohydrate (about 26% of energy) versus low-fat (about 54% carbohydrate) diets; median 24 weeks Evidence A source
- A 2025 meta-analysis of 60 randomized trials in 5511 adults found that the CRP fall with low-carbohydrate diets versus control diets did not hold up: with one trial removed it was 0.14 mg/L and no longer significant. — adults in RCTs of low-carbohydrate versus control diets; larger falls with BMI over 35 or baseline CRP over 4.5 mg/L Evidence A source
- A 2025 meta-analysis of 174 randomized trials in 11,481 adults found that carbohydrate-restricted diets lowered CRP by 0.37 mg/L and TNF-alpha by 0.27 pg/mL versus higher-carbohydrate diets. — adults in RCTs comparing diets with 45% or less of energy from carbohydrate against higher-carbohydrate diets, 27 countries Evidence A source
- A 2025 meta-analysis of 44 randomized trials found ketogenic diets lowered TNF-alpha by 0.32 pg/mL and IL-6 by 0.27 pg/mL, with no significant effect on CRP. — participants in RCTs of ketogenic diets versus control diets Evidence A source
- A 2013 meta-analysis of 14 randomized trials found that low glycemic index or load diets lowered CRP by 0.43 mg/dl more than high glycemic diets over the long term. — RCTs of low versus high GI/GL diets in obesity management; effect held after excluding type 2 diabetes Evidence A source
- A 2021 meta-analysis of 29 trial comparisons in 1617 people with diabetes found low glycemic index or load diets lowered CRP by 0.41 mg/L, a change the authors rated trivial. — adults with type 1 or type 2 diabetes, mostly middle-aged and overweight, on drugs or insulin; trials of 3 weeks or more Evidence A source
- A 2019 meta-analysis of randomized trials in type 2 and gestational diabetes found no CRP difference between low and higher glycemic index diets, but a significant difference in IL-6. — patients with type 2 diabetes and women with gestational diabetes; 10 RCTs reviewed, 9 pooled Evidence A source
- A 2015 meta-analysis of 14 randomized trials found that dietary fiber or fiber-rich foods lowered CRP by 0.37 mg/L in adults with overweight or obesity. — overweight and obese adults; reduction seen when fiber intake was 8 g/day higher than control Evidence A source
- A 2022 meta-analysis of 64 controlled feeding trials in 4094 adults found that sugars as such did not raise CRP when calories were matched, but mixed sources containing sugary drinks did, while fruit lowered it. — predominantly healthy, mixed-weight or overweight adults; 12 food sources of fructose-containing sugars; median 6 weeks Evidence A source
- A 2018 meta-analysis of 13 intervention studies in 1141 people found no difference in CRP between fructose and glucose diets, and the authors rated the evidence low. — adults or adolescents in controlled intervention studies of at least 2 weeks Evidence A source
- In a randomized crossover trial of 24 adults drinking 4 sweetened drinks a day for 8 days, fructose, high-fructose corn syrup and glucose drinks left CRP and IL-6 unchanged relative to each other. — normal-weight to obese adults without fructose malabsorption; drinks supplied 25% of estimated energy needs Evidence B source
- In a 2026 randomized crossover trial of 39 healthy adults, 14 days of drinks with 66 g of sucrose a day did not change CRP differently from drinks with saccharin or stevia. — healthy normal-weight adults; sucrose 66 g/day versus saccharin or steviol glycosides 220 mg/day for 14 days Evidence B source
- A 2014 systematic review found that observational studies often link fiber and whole grains to lower inflammatory markers, but trials mostly do not, which suggests confounding. — adults without inflammatory disease; 60 studies of GI/GL, fiber and whole grain Evidence C source
- According to a 2024 US Department of Veterans Affairs evidence map, some evidence suggests that simple carbohydrates, like saturated fat, may promote inflammation, though the mechanisms are not understood. — adults; evidence map of anti-inflammatory diets for chronic conditions Evidence E source
- A 2022 meta-analysis of 16 trials in 1251 adults with chronic constipation found fiber supplements raised the response rate to 66% from 41% (RR 1.48), with benefit seen above 10 g a day. — adults with chronic constipation Evidence A source
- In a 4-week trial of 294 adults with irritable bowel syndrome, a fiber-optimized low-carbohydrate diet reduced symptom severity in 71% of people, versus 58% on optimized medication. — adults with moderate-to-severe IBS (Rome IV), 82% women, mean age 38 Evidence B source
- NIDDK lists not eating enough fiber among the health and nutrition causes of constipation. — people with constipation (US patient guidance) Evidence E source
What too much does
- A 2026 meta-analysis of 53 RCTs found ketogenic diets lowered triglycerides by 22 mg/dL and raised HDL by 3.5 mg/dL, but also raised LDL by 8 mg/dL. — adults in RCTs of ketogenic diets (more than 45% fat, less than 10% carbohydrate) versus control diets Evidence A source
- A second 2026 meta-analysis of 62 RCTs of ketogenic diets in adults found the same pattern: triglycerides down 20 mg/dL, HDL up 3.6 mg/dL, LDL up 8.5 mg/dL. — adults in randomized controlled trials of ketogenic diets Evidence A source
- A 2025 meta-analysis of 174 trials with 11,481 adults found carbohydrate-restricted diets cut triglycerides by 15 mg/dL and raised LDL by about 5 mg/dL, with bigger LDL rises on ketogenic diets. — adults in randomized trials comparing diets with 45% of energy or less from carbohydrate to higher-carbohydrate diets Evidence A source
- A lean 51-year-old woman's LDL rose from 142 to 555 mg/dL on a very-low-carbohydrate diet. She carried an ABCG5 gene variant, and LDL fell 75% with diet change and ezetimibe. — one 51-year-old woman, BMI 18.5 kg/m2 Evidence D source
- The US National Lipid Association's 2019 statement found mixed effects of low-carb diets on LDL, with some studies showing a rise, and reviewed potential safety concerns, especially for people with genetic lipid disorders. — adults considering low-carbohydrate and very-low-carbohydrate diets; high-risk individuals with genetic lipid disorders Evidence E source
- The same 2025 meta-analysis of 174 trials found that carbohydrate-restricted diets raised LDL cholesterol, with ketogenic diets raising it the most. — adults in RCTs of carbohydrate-restricted diets, including ketogenic diets Evidence A source
- A 2025 meta-analysis of 45 observational studies linked high added sugar intake with 66% higher odds of Crohn's disease and 59% higher odds of ulcerative colitis. — general population; 11 prospective and 34 retrospective studies Evidence C source
- When the American regulator first proposed putting added sugars on the label, it said there was no scientific basis for setting a limit at all. — United States packaged food labeling Evidence E source
- A 2022 Cochrane review of weight-loss trials in adults without diabetes found no clear difference in constipation between low-carbohydrate and balanced-carbohydrate diets at three to six months (RR 1.06, 4 RCTs, 564 people). — overweight and obese adults without type 2 diabetes, weight-reducing phase only Evidence A source
- In the same Cochrane review, adults with type 2 diabetes on low-carbohydrate weight-loss diets showed a non-significant 37% higher constipation risk at six months (RR 1.37, 2 RCTs, 177 people). — overweight and obese adults with type 2 diabetes, weight-reducing phase only Evidence A source
- A 2026 systematic review of 36 prospective studies of ketogenic diets found constipation was the single most reported adverse event, 24% of all events, and stricter diets brought more and worse events. — prospective interventional studies 2019-2024, all ages and conditions, classic KD, MAD, MCT KD, LGIT Evidence C source
- In an 8-week trial of 91 adults with obesity, a very-low-carbohydrate high-fat diet cut fecal output and defecation frequency compared with a high-carbohydrate high-fiber diet. — overweight and obese adults, age 50.6 y, BMI 33.7; energy-restricted (about 30% deficit) isoenergetic diets Evidence B source
- In three US cohorts of 95,917 middle-aged and older adults, a low-carbohydrate eating pattern was not linked to chronic constipation until cereal fiber was accounted for, then the top fifth had 10% higher risk. — NHS, NHSII and HPFS participants, mean age 60-79 y; 7519 incident cases over 2-4 years Evidence C source
Medicines it interacts with
- ADA 2026 says very low-carb eating should be avoided by people taking SGLT2 inhibitor drugs because of the risk of ketoacidosis. — people with diabetes taking SGLT2 inhibitors Evidence E source
- ADA 2026 says people on very low-carb plans need medical oversight because insulin and other diabetes drugs may need lowering to prevent hypoglycemia. — people with diabetes on glucose-lowering drugs following very-low-carbohydrate plans Evidence E source
- A case report describes a 58-year-old man on empagliflozin who developed severe diabetic ketoacidosis one month after starting a ketogenic diet. — 58-year-old man with type 2 diabetes on an SGLT2 inhibitor Evidence D source
- A 2026 case series of 14 people with ketogenic-diet-induced high cholesterol found their LDL fell more than expected on ezetimibe. — 14 patients with ketogenic diet-induced hypercholesterolemia Evidence D source
No Tolerable Upper Intake Level has been set for this nutrient, which is not the same as unlimited. Values from cards cb-d-08 below.
What to do with this
The American RDA is 130 g a day, rising to 175 g in pregnancy and 210 g while breastfeeding. That reference value dates from 2005 and is being rebuilt now.
Source matters more to the World Health Organization than amount. It recommends carbohydrate mainly from whole grains, vegetables, fruit and pulses, with at least 14 oz (400 g) of vegetables and fruit and 25 g of fiber a day for adults. In adults at high risk of type 2 diabetes, replacing 100 g a day of refined staples with whole grain improved triglycerides and the triglyceride-glucose index. The US label ceiling for added sugars is 50 g a day from age 4 and 25 g for children aged 1 to 3.
Read the label with one caution. Total carbohydrate is calculated by difference and includes starch, sugars, sugar alcohols and fiber together. Net carbs is not a regulated term, and manufacturers have defined it in conflicting ways.
If you take insulin or other glucose-lowering drugs, the American Diabetes Association says a very low carbohydrate plan needs medical oversight, because doses may need lowering to prevent hypoglycemia. On an SGLT2 inhibitor it advises avoiding very low carbohydrate eating because of ketoacidosis. It does not recommend very low carbohydrate eating in pregnancy or breastfeeding, for children, with kidney disease or with disordered eating. Lean adults saw the largest LDL rise on ketogenic diets, 42 mg/dL (1.08 mmol/L) in 3 trials of normal-weight adults.
Where to get it from food
Share of the Daily Value (275 g) in one typical portion.
| Food | Portion | % DV |
|---|---|---|
| Frostings, white, fluffy, dry mix | 1 package (207 g) | 71% |
| Triticale | 1 cup (192 g) | 50% |
| Sorghum grain | 1 cup (192 g) | 50% |
| Rye grain | 1 cup (169 g) | 47% |
| Cranberry-orange relish, canned | 1 cup (275 g) | 46% |
| Barley malt flour | 1 cup (162 g) | 46% |
| Cornmeal, degermed, white | 1 cup (157 g) | 45% |
| Cornmeal, degermed, yellow | 1 cup (157 g) | 45% |
Top sources among the 1252 USDA entries on this site, per typical portion. Full ranking →
The bottom line
The reference number for carbohydrate is less solid than it looks. The 130 g RDA rests on the brain's estimated glucose need, and the agency review behind the next American values says future figures should aim at chronic disease risk instead. The World Health Organization declined to set an amount at all. What it does cite is a wide band, with intakes of about 40 to 70 percent of energy going with lower death rates than intakes outside it, an observational pattern. The glycemic index is the open argument. WHO set it aside after trials showed little to no change in cardiometabolic risk factors. A year later a meta-analysis of ten cohorts linked high glycemic index diets with more type 2 diabetes (RR 1.27, 95% CI 1.21 to 1.34), an association that cannot show cause. In type 2 diabetes, low carbohydrate helps early and then fades. A 2021 meta-analysis found HbA1c 0.47 points lower than on control diets at six months and 0.23 points lower at twelve, where the confidence interval reached zero. Six trials lasting over a year found no significant difference. Diets higher in both fiber and carbohydrate lowered HbA1c by 0.50 points against lower carbohydrate, lower fiber diets in 10 trials of 499 people with diabetes. Inflammation is a weak reason to cut carbohydrate. Low carbohydrate did not lower CRP, IL-6 or TNF-alpha more than low-fat diets in 25 trials of 2,222 adults. Against higher carbohydrate diets in general, CRP fell by 0.37 mg/L across 174 trials, and in another analysis of 60 trials the CRP fall lost significance once a single trial was removed. The LDL rise depends on who is dieting. In trials of lean adults eating under 4.6 oz (130 g) a day, LDL rose by 41 mg/dL, while at a BMI of 35 or more it fell slightly. One lean 51-year-old woman with an ABCG5 gene variant went from 142 to 555 mg/dL, a single case report. Constipation was the most reported adverse event in prospective ketogenic studies, 24 percent of 743 recorded events. Weight-loss trials in adults without diabetes found no clear difference in constipation at three to six months, on very low certainty evidence. Cooking shifts the glucose response too. In healthy volunteers in Sweden, boiled potatoes chilled for 24 hours and eaten with vinaigrette had a glycemic index of 96 against 168 for freshly boiled ones, a result that combines cooling with vinegar.
Daily Values are one number for everyone. Yours depend on your body, activity and goal. Bioma works out your personal targets and shows every meal against them, from a photo. About Bioma →
Deep reviews on this topic
Foods discussed in this guide
- Sugar: the two WHO numbers are not one rule
- Cornmeal: the label and the mill decide what you get
- Fruit: the differences between fruits are bigger than fruit itself
- Barley, beta-glucan and what the trials actually measured
- Malt: sprouting moves the zinc, the powder is mostly sugar
- Potato: chilling it, and the enzyme before surgery
- Relish: a sweet condiment with a vinegar story attached
- Sorghum: a grain with few human trials
- Breakfast cereal: one word for an eightfold difference
- Rice: the arsenic question, and the water you pour away
- Vegetables: small effects, measured honestly
- Vinegar and blood sugar: one narrow effect
Sources
- cb-d-08 · Position of an expert body · agency systematic review, background
For children older than 1 year and adults of all age groups and sexes, the Recommended Dietary Allowance (RDA) of carbohydrates is set as 130 grams per day.
AHRQ, Association of Digestible Carbohydrate Intake With Cardiovascular Disease, Type 2 Diabetes, 2025 · checked 2026-09-21 · independently re-checked - cb-d-16 · Position of an expert body · regulatory register entry
POL-HC-8438 Carbohydrates Carbohydrates contribute to the maintenance of normal brain function Authorised
(value from the source's table, not a sentence)
EU Register on nutrition and health claims (European Commission) · checked 2026-09-21 · independently re-checked - cb-d-06 · Position of an expert body · regulatory text
This calculation method is called ``carbohydrate by difference'' and is described in A.L. Merrill and B.K. Watt, ``Energy Value of Foods--Basis and Derivation,'' in the USDA Handbook No. 74 (Ref. 63).
FDA, Food Labeling: Revision of the Nutrition and Supplement Facts Labels, proposed rule, 2014 · checked 2026-09-21 · independently re-checked - cb-d-01 · Position of an expert body · WHO guideline
Consequently, this guideline does not include recommendations on the amount of carbohydrate that should be consumed, and carbohydrate intake should continue to be based on recommended levels of protein (32) and fat intake (101).
Carbohydrate intake for adults and children: WHO guideline, 2023 · checked 2026-09-21 · independently re-checked - cb-d-02 · Position of an expert body · WHO guideline remark citing a meta-analysis
Intakes of approximately 40–70% of total energy intake as carbohydrate are associated with reduced risk of mortality compared with lower (<40%) or higher (>70%) intakes.
Carbohydrate intake for adults and children: WHO guideline, 2023 · checked 2026-09-21 · independently re-checked - cb-d-03 · Position of an expert body · WHO guideline
In adults, WHO recommends an intake of at least 25 g per day of naturally occurring dietary fibre as consumed in foods (strong recommendation).
Carbohydrate intake for adults and children: WHO guideline summary, 2023 · checked 2026-09-21 · independently re-checked - cb-d-19 · Position of an expert body · reference dataset
Added Sugars [DRV, Grams (g)] 21 CFR 101.9(c)(9) · 50 Adults and children ≥4 years · N/A Infants through 12 months · 25 Children 1 through 3 years · 50 Pregnant women and lactating women
(value from the source's table, not a sentence)
21 CFR 101.9(c)(9), Daily Reference Values, FDA · checked 2026-09-21 · independently re-checked - cb-d-17 · Position of an expert body · agency systematic review, statement of purpose
These two reviews intend to inform the upcoming U.S. and Canadian government DRI guideline about dietary digestible carbohydrate intake.
AHRQ, Association of Digestible Carbohydrate Intake With Cardiovascular Disease, Type 2 Diabetes, 2025 · checked 2026-09-21 · independently re-checked - cb-d-07 · Position of an expert body · regulatory text
The petition suggested that the varied approaches to describing carbohydrates have led to consumer confusion.
FDA, Food Labeling: Revision of the Nutrition and Supplement Facts Labels, proposed rule, 2014 · checked 2026-09-21 · independently re-checked - cb-d-14 · Position of an expert body · reference dataset
Pudding, rice, Carbohydrate, by difference 18.39 G per 100 g [fdc_id 2705685] · 1 cup 260 g 47.8 G · Rice milk, Carbohydrate, by difference 9.17 G per 100 g [fdc_id 2705411] · 1 cup 244 g 22.4 G
(value from the source's table, not a sentence)
USDA FNDDS 2021-2023 (Food and Nutrient Database for Dietary Studies) · checked 2026-09-21 · independently re-checked - cb-d-20 · Randomized controlled trial(s) · controlled crossover meal trial
Cold storage of boiled potatoes increased resistant starch (RS) content significantly from 3.3 to 5.2% (starch basis).
European Journal of Clinical Nutrition, 2005 · checked 2026-09-21 · independently re-checked - cb-d-13 · Position of an expert body · source coverage check
«carbohydrate» is NOT in the USDA retention table. Release 6 has exactly 26 nutrients, and this is not among them, neither among the 16 parsed nor among the 10 skipped with a reason.
(value from the source's table, not a sentence)
USDA Table of Nutrient Retention Factors, Release 6 (2007), Agricultural Research Service · checked 2026-09-21 · independently re-checked - ev-lcbs-11 · Position of an expert body · guideline
In addition, very-low-carbohydrate eating plans are not currently recommended for individuals who are pregnant or lactating, children, people who have kidney disease, or people with or at risk for disordered eating (46).
American Diabetes Association Professional Practice Committee, 5. Facilitating Positive Health Behaviors and Well-being to Improve Health Outcomes: Standards of Care in Diabetes-2026, Diabetes Care 2026;49(Suppl 1):S89-S131 · checked 2026-10-07 · independently re-checked - ev-lcch-05 · Meta-analysis or systematic review · meta-analysis of RCTs
For trials with mean baseline BMI <25, LDL cholesterol increased by 41 mg/dL (95% CI: 19.6, 63.3) on the LCD.
Am J Clin Nutr, 2024 · checked 2026-10-07 · independently re-checked - ev-lcch-06 · Meta-analysis or systematic review · meta-analysis of RCTs
A KD significantly increased TC by 1.47 mmol/L (95%CI, 0.72-2.22 mmol/L), LDL-C by 1.08 mmol/L (95%CI, 0.37-1.79 mmol/L), and apoB by 0.35 g/L (95%CI, 0.06-0.65 g/L).
Nutr Rev, 2023 · checked 2026-10-07 · independently re-checked - ev-lcbs-08 · Randomized controlled trial(s) · randomized controlled trial
The delta HbA1c improved in both groups: -0.7% vs. -0.1% (p = 0.02).
Acta Paediatr, 2025 · checked 2026-10-07 · independently re-checked - ev-lccon-03 · Meta-analysis or systematic review · meta-analysis
Adverse events varied: constipation was most common with MAD (30.97%), whereas KD had higher rates of respiratory infections (42.77%, P < 0.0001 vs. MAD) and diarrhea (13.75% vs. 8.11%, P = 0.0017).
World J Pediatr, 2025 · checked 2026-10-07 · independently re-checked - ev-lccon-04 · Meta-analysis or systematic review · meta-analysis
The most commonly reported adverse effects were vomiting, constipation and diarrhoea for both the intervention and usual care group, but the true effect could be substantially different (low-certainty evidence).
Cochrane Database Syst Rev, 2020 · checked 2026-10-07 · independently re-checked - cb-d-09 · Meta-analysis or systematic review · meta-analysis of randomized controlled trials
Ketogenic diets were associated with slightly greater weight loss than higher-carbohydrate diets (MD = -1.49 kg; 95% CI: -2.41 to -0.58; p = 0.008; I2 = 0%).
Nutrients, 2026 · checked 2026-09-21 · independently re-checked - cb-d-10 · Meta-analysis or systematic review · meta-analysis of randomized controlled trials
Under energy-matched conditions, LC confers modest advantages for glycaemia, HDL-C, and TAG, whereas HC better lowers LDL-C.
European Journal of Nutrition, 2026 · checked 2026-09-21 · independently re-checked - cb-d-04 · Position of an expert body · WHO guideline
glycaemic index and glycaemic load only provide information about how a food affects postprandial glucose levels; they do not take into consideration other potentially undesirable components of the food that may contribute to a reduction in diet quality.
Carbohydrate intake for adults and children: WHO guideline, 2023 · checked 2026-09-21 · independently re-checked - cb-d-05 · Observational data · meta-analysis of prospective cohorts
Consumption of high GI foods was associated with an increased incidence of type 2 diabetes (RR 1·27 [95% CI 1·21-1·34]; p<0·0001), total cardiovascular disease (1·15 [1·11-1·19]; p<0·0001), diabetes-related cancer (1·05 [1·02-1·08]; p=0·0010), and all-cause mortality (1·08 [1·05-1·12]; p<0·0001).
Lancet Diabetes & Endocrinology, 2024 · checked 2026-09-21 · independently re-checked - cb-d-12 · Randomized controlled trial(s) · randomized controlled trial, secondary exploratory analysis
Standardized whole-grain staple replacement
Nutrients, 2026 · checked 2026-09-21 · independently re-checked - ev-lcch-04 · Meta-analysis or systematic review · Cochrane review
There is probably little to no difference in weight reduction and changes in cardiovascular risk factors up to two years' follow-up, when overweight and obese participants without and with T2DM are randomised to either low-carbohydrate or balanced-carbohydrate weight-reducing diets.
Cochrane Database Syst Rev, 2022 · checked 2026-10-07 · independently re-checked - ev-lcch-07 · Meta-analysis or systematic review · network meta-analysis
Ketogenic diets showed the largest increases in LDL cholesterol [0.43 mmol/L (0.13; 0.74)] total cholesterol [0.55 mmol/L (0.13; 0.96)] and HDL cholesterol [0.12 mmol/L (0.06; 0.18)], compared with the reference diet, whereas triglyceride responses differed, with high-carbohydrate diets increasing them [0.24 mmol/L (0.04; 0.43)].
Eur J Nutr, 2026 · checked 2026-10-07 · independently re-checked - ev-lcch-08 · Meta-analysis or systematic review · meta-analysis of RCTs
As with glycemic control, there were no significant differences in the changes in weight loss, blood pressure, and low-density lipoprotein cholesterol between long-term LCD and control diets.
J Diabetes Investig, 2024 · checked 2026-10-07 · independently re-checked - ev-lcch-09 · Randomized controlled trial(s) · RCT
At 12 months, participants on the low-carbohydrate diet had greater decreases in weight (mean difference in change, -3.5 kg [95% CI, -5.6 to -1.4 kg]; P = 0.002), fat mass (mean difference in change, -1.5% [CI, -2.6% to -0.4%]; P = 0.011), ratio of total-high-density lipoprotein (HDL) cholesterol (mean difference in change, -0.44 [CI, -0.71 to -0.16]; P = 0.002), and triglyceride level (mean difference in change, -0.16 mmol/L [-14.1 mg/dL] [CI, -0.31 to -0.01 mmol/L {-27.4 to -0.8 mg/dL}]; P = 0.038) and greater increases in HDL cholesterol level (mean difference in change, 0.18 mmol/L [7.0 mg/dL] [CI, 0.08 to 0.28 mmol/L {3.0 to 11.0 mg/dL}]; P < 0.001) than those on the low-fat diet.
Ann Intern Med, 2014 · checked 2026-10-07 · independently re-checked - ev-lcch-10 · Randomized controlled trial(s) · RCT
The relative reduction in the ratio of total cholesterol to high-density lipoprotein cholesterol was 20% in the low-carbohydrate group and 12% in the low-fat group (P=0.01).
N Engl J Med, 2008 · checked 2026-10-07 · independently re-checked - ev-lcbs-01 · Meta-analysis or systematic review · meta-analysis
LCDs achieved greater reductions in HbA1c than did control diets (mean difference –0.47%, –0.60 to –0.34; n=747; GRADE=high) (table 2). At 12 months, eight studies reported on HbA1c levels, showing that the effect size had decreased by around half (mean difference –0.23%, –0.46% to 0.00%; n=489; GRADE=moderate) (table 2).
BMJ, 2021 · checked 2026-10-07 · independently re-checked - ev-lcbs-02 · Meta-analysis or systematic review · meta-analysis
At six months, compared with control diets, LCDs achieved higher rates of diabetes remission (defined as HbA1c <6.5%) (76/133 (57%) v 41/131 (31%); risk difference 0.32, 95% confidence interval 0.17 to 0.47; 8 studies, n=264, I2=58%). Conversely, smaller, non-significant effect sizes occurred when a remission definition of HbA1c <6.5% without medication was used.
BMJ, 2021 · checked 2026-10-07 · independently re-checked - ev-lcbs-03 · Meta-analysis or systematic review · meta-analysis
LCDs improved glycemia short-term: HbA1c - 0.29 %, with the largest effect at 3 months. Fasting blood glucose decreased overall (-7.12 mg/dL).
Diabetes Res Clin Pract, 2025 · checked 2026-10-07 · independently re-checked - ev-lcbs-04 · Meta-analysis or systematic review · meta-analysis
This study did not show significant differences in changes in glycated hemoglobin between long-term LCD and control diets (standardized mean difference -0.11, 95% confidence interval -0.33 to 0.11, P = 0.32).
J Diabetes Investig, 2024 · checked 2026-10-07 · independently re-checked - ev-lcbs-05 · Meta-analysis or systematic review · network meta-analysis
A very low-carbohydrate, high-protein, and calorie-restricted diet had the greatest effect on reducing HbA1c (range of mean difference: - 1.0% to - 1.79%), weight (range of mean difference: -5.83 kg to -10.96 kg), and FPG (range of mean difference: - 2.20 mmol/L to - 2.88 mmol/L) at 6-month follow-up, but at 12-month follow-up, the effect remained only for HbA1c (range of mean difference: - 1.25% to - 1.30%) and FPG (range of mean difference: - 1.21 mmol/L to - 1.27 mmol/L).
J Health Popul Nutr, 2025 · checked 2026-10-07 · independently re-checked - ev-lcbs-06 · Meta-analysis or systematic review · meta-analysis
CRDs significantly improved glycemic control (including glucose: SMD = -2.94 mg/dL, 95 % CI: -4.19, -1.68; insulin: SMD = -8.19 pmol/L, 95 % CI: -11.04, -5.43; HOMA-IR = -0.54, 95 % CI: -0.75, -0.33), hepatic stress (GGT: SMD = -6.08 U/L, 95 % CI: -9.97, -2.20), renal function (UACR: SMD = -0.19, 95 % CI: -0.28, -0.10), and adipokine concentration (leptin: SMD = -3.25 ng/mL, 95 % CI: -4.91, -1.59), particularly in females, individuals with overweight/obesity, and people with T2DM.
Clin Nutr, 2025 · checked 2026-10-07 · independently re-checked - ev-lcbs-07 · Meta-analysis or systematic review · meta-analysis
Pooled findings indicate that higher fiber higher carbohydrate diets reduced HbA1c (mean difference [MD] -0.50% [95% confidence interval -0.99 to -0.02]), fasting insulin (MD -0.99 μIU/mL [-1.83 to -0.15]), total cholesterol (MD -0.16 mmol/L [-0.27 to -0.05]) and low-density lipoprotein cholesterol (MD -0.16 mmol/L (-0.31 to -0.01) when compared with lower carbohydrate lower fiber diets.
Obes Rev, 2025 · checked 2026-10-07 · independently re-checked - ev-lcbs-09 · Position of an expert body · guideline
5.15 Consider reducing carbohydrate intake for some adults with diabetes to improve glycemia. An effective way to achieve this is by limiting consumption of processed foods.
American Diabetes Association Professional Practice Committee, 5. Facilitating Positive Health Behaviors and Well-being to Improve Health Outcomes: Standards of Care in Diabetes-2026, Diabetes Care 2026;49(Suppl 1):S89-S131 · checked 2026-10-07 · independently re-checked - ev-crbi-01 · Meta-analysis or systematic review · meta-analysis
No significant differences were found between LC and LF diets for interleukin-6 (SMD: -0.01; 95% CI: -0.12 to 0.09), C-reactive protein (SMD: -0.01; 95% CI: -0.11 to 0.09), or tumor necrosis factor-alpha (SMD: -0.03; 95% CI: -0.18 to 0.11), nor for adiponectin, leptin, or resistin.
Nutr Res, 2026 · checked 2026-10-07 · independently re-checked - ev-crbi-02 · Meta-analysis or systematic review · meta-analysis
Sensitivity analysis by omitting each study one at a time showed the meta‐analysis result was influenced by Abbaspour Rad et al. (Rad et al. 2023) study, which changed the significance of the results (MD = −0.14; 95% CI: −0.28 to 0.00; p = 0.052) while the heterogeneity remained unchanged (Cochrane's Q‐test, p = 0.002, I 2 = 37.2%).
Food Science & Nutrition, 2025, Effect of Low-Carbohydrate Diets on C-Reactive Protein Level in Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials · checked 2026-10-07 · independently re-checked - ev-crbi-03 · Meta-analysis or systematic review · meta-analysis
For cardiovascular health, compared with higher-carbohydrate diets, CRDs significantly reduced blood pressure: SBP (–2.05 mmHg) and DBP (–1.26 mmHg); lipid profiles: TG (–15.11 mg/dL), LDL–HDL ratio (–0.18), TG-HDL ratio (–0.32), VLDL (–3.34 mg/dL), and ApoB-ApoA1 ratio (–0.03); and other endothelial and inflammatory markers: E-selectin (–2.23 ng/mL), CRP (–0.37 mg/L), and TNF-α (–0.27 pg/mL).
Am J Clin Nutr, 2025 · checked 2026-10-07 · independently re-checked - ev-crbi-05 · Meta-analysis or systematic review · meta-analysis
The pooled findings showed that a KD has an effect on lowering TNF-α (WMD: -0.32 pg/mL; 95% CI: -0.55, -0.09; P = 0.007) and IL-6 (WMD: -0.27 pg/mL; 95% CI: -0.52, -0.02; P = 0.036) compared with control groups.
Nutr Rev, 2025 · checked 2026-10-07 · independently re-checked - ev-crbi-06 · Meta-analysis or systematic review · meta-analysis
Weighted mean differences in change of C-reactive protein [WMD: -0.43 mg/dl, (95% CI -0.78 to -0.09), p = 0.01], and fasting insulin [WMD: -5.16 pmol/L, (95% CI -8.45 to -1.88), p = 0.002] were significantly more pronounced in benefit of low GI/GL diets.
Nutr Metab Cardiovasc Dis, 2013 · checked 2026-10-07 · independently re-checked - ev-crbi-07 · Meta-analysis or systematic review · meta-analysis
trivial reductions in fasting blood glucose (−0.36 mmol/L (−0.42 to −0.19), P<0.001; substantial heterogeneity; I2=54%, P<0.001) and CRP (−0.41 mg/L (−0.78 to −0.04), P=0.03; no substantial heterogeneity, I2=24%, P=0.26).
BMJ, 2021 · checked 2026-10-07 · independently re-checked - ev-crbi-08 · Meta-analysis or systematic review · meta-analysis
The results of the meta-analysis did not show significant differences (p > 0.05) between low GI and higher GI diets with respect to adiponectin and C-reactive proteins in patients with type 2 diabetes, but a significant difference (p < 0.001) was observed between the two groups in relation to interleukin-6.
Nutrients, 2019 · checked 2026-10-07 · independently re-checked - ev-crbi-09 · Meta-analysis or systematic review · meta-analysis
Meta-analysis including 14 RCTs showed that intervention with dietary fiber or fiber-rich food, compared with control, produced a slight, but significant reduction of 0.37 mg/L (95% CI -0.74, 0) in circulating CRP level among this population.
Int J Food Sci Nutr, 2015 · checked 2026-10-07 · independently re-checked - ev-crbi-10 · Meta-analysis or systematic review · meta-analysis
The evidence provides good indication that mixed sources that contain SSBs increase CRP, while most other food sources have no effect with some sources (fruit, 100% fruit juice, sweetened soy beverage or dark chocolate) showing decreases, which may be dependent on energy control.
Nutrients, 2022 · checked 2026-10-07 · independently re-checked - ev-crbi-11 · Meta-analysis or systematic review · meta-analysis
The comparator of fructose interventions vs glucose control groups showed no differences for CRP (MD: −0.03 mg/L 95% CI −0.52 to 0.46, I2 = 44%)
Nutrients, 2018, Effect of Dietary Sugar Intake on Biomarkers of Subclinical Inflammation: A Systematic Review and Meta-Analysis of Intervention Studies · checked 2026-10-07 · independently re-checked - ev-crbi-12 · Randomized controlled trial(s) · randomized controlled trial
Fasting plasma concentrations of C-reactive protein and IL-6 did not differ significantly at the end of the 3 diet periods.
Am J Clin Nutr, 2016 · checked 2026-10-07 · independently re-checked - ev-crbi-13 · Randomized controlled trial(s) · randomized controlled trial
Triglycerides were higher after sucrose than saccharin (p < 0.05), while no differences were seen for cholesterol, apolipoproteins, or CRP.
Nutrients, 2026 · checked 2026-10-07 · independently re-checked - ev-crbi-14 · Observational data · systematic review
Benefits of higher fiber and whole-grain intakes suggested by observational studies may reflect confounding.
Am J Clin Nutr, 2014 · checked 2026-10-07 · independently re-checked - ev-crbi-16 · Position of an expert body · agency evidence map
Despite the lack of understanding of the mechanisms by which inflammation might increase the risk for or the progression of chronic diseases, some evidence suggests that some nutrients, eg, simple carbohydrates and saturated fat, may promote inflammation.
US Department of Veterans Affairs, Evidence Synthesis Program, Beyond Diabetes, Obesity, and Cardiovascular Disease: An Evidence Map of Anti-Inflammatory Diet, 2024 · checked 2026-10-07 · independently re-checked - ev-lccon-07 · Meta-analysis or systematic review · meta-analysis
Overall, 311 of 473 (66%) participants responded to fiber treatment and 134 of 329 (41%) responded to control treatment [RR: 1.48 (95% CI: 1.17, 1.88; P = 0.001); I2 = 57% (P = 0.007)], with psyllium and pectin having significant effects.
Am J Clin Nutr, 2022 · checked 2026-10-07 · independently re-checked - ev-lccon-09 · Randomized controlled trial(s) · randomized controlled trial
After 4 weeks, 73 (76%) of 96 participants in the LFTD diet group, 69 (71%) of 97 participants in the low-carbohydrate diet group, and 59 (58%) of 101 participants in the optimised medical treatment group had a reduction of 50 or more in IBS-SSS compared with baseline, with a significant difference between the groups (p=0·023).
Lancet Gastroenterol Hepatol, 2024 · checked 2026-10-07 · independently re-checked - ev-lccon-10 · Position of an expert body · agency guidance
not eating enough fiber
NIDDK, Symptoms & Causes of Constipation (NIH) · checked 2026-10-07 · independently re-checked - ev-lcch-01 · Meta-analysis or systematic review · meta-analysis of RCTs
According to the GRADE assessment, there is moderate certainty regarding TG and HDL-C, while certainty for LDL-C and TC remains low.
BMC Cardiovasc Disord, 2026 · checked 2026-10-07 · independently re-checked - ev-lcch-02 · Meta-analysis or systematic review · meta-analysis of RCTs
The ketogenic diet significantly improves triglycerides and HDL-C but also leads to modest increases in LDL-C.
Endocr Pract, 2026 · checked 2026-10-07 · independently re-checked - ev-lcch-03 · Meta-analysis or systematic review · meta-analysis of RCTs
Moderate-carbohydrate diets offered balanced benefits, whereas ketogenic diets produced greater weight loss but greater increases in LDL and total cholesterol.
Am J Clin Nutr, 2025 · checked 2026-10-07 · independently re-checked - ev-lcch-11 · Mechanistic or laboratory data · case report
In this case, her LDL-C concentration increased from 142 mg/dL to 555 mg/dL on a VLCD, and her plasma β-sitosterol level was very high at 12.8 mg/L.
J Clin Lipidol, 2025 · checked 2026-10-07 · independently re-checked - ev-lcch-13 · Position of an expert body · position statement
The evidence reviewed showed mixed effects on low-density lipoprotein cholesterol levels with some studies showing an increase.
Journal of Clinical Lipidology, 2019, 13(5):689-711.e1, National Lipid Association scientific statement · checked 2026-10-07 · independently re-checked - ev-crbi-04 · Meta-analysis or systematic review · meta-analysis
Moderate-carbohydrate diets offered balanced benefits, whereas ketogenic diets produced greater weight loss but greater increases in LDL and total cholesterol.
Am J Clin Nutr, 2025 · checked 2026-10-07 · independently re-checked - ev-crbi-15 · Observational data · meta-analysis
Pooled analysis showed that added sugar intake was associated with increased risk of Crohn's disease (OR 1.66; 95% Cl 1.21-2.29; n = 523,730; 14 studies) and ulcerative colitis (OR 1.59; 95% CI 1.25-2.02; n = 787,228; 18 studies).
United European Gastroenterol J, 2025 · checked 2026-10-07 · independently re-checked - cb-d-18 · Position of an expert body · regulatory text
no scientifically supported quantitative intake recommendation for added sugars on which a DRV for added sugars can be derived
FDA, Food Labeling: Revision of the Nutrition and Supplement Facts Labels, proposed rule, 2014 · checked 2026-09-21 · independently re-checked - ev-lccon-01 · Meta-analysis or systematic review · meta-analysis
The meta‐analysis of the risk ratio of the number of participants per group reporting constipation at three to six months was 1.06 (95% CI 0.81 to 1.38, I2 = 0%, 564 participants, 4 RCTs, very low‐certainty evidence, Analysis 1.24) when comparing the two diet groups.
Cochrane Database Syst Rev, 2022 · checked 2026-10-07 · independently re-checked - ev-lccon-02 · Meta-analysis or systematic review · meta-analysis
The meta‐analysis of the risk ratio of the number of participants per group reporting constipation at six months was 1.37 (95% CI 0.86 to 2.18, I2 = 0%, 177 participants, 2 RCTs, very low‐certainty evidence, Analysis 3.19) when comparing low‐carbohydrate and balanced‐carbohydrate diet groups.
Cochrane Database Syst Rev, 2022 · checked 2026-10-07 · independently re-checked - ev-lccon-05 · Observational data · systematic review
Constipation was the most frequently reported individual AE within this category, accounting for 23.9% of all recorded AEs.
BMC Nutr, 2026 · checked 2026-10-07 · independently re-checked - ev-lccon-06 · Randomized controlled trial(s) · randomized controlled trial
Compared with the HC group, there were significant reductions in the LC group for faecal output (21 (sd 145) v. - 61 (sd 147) g), defecation frequency, faecal excretion and concentrations of butyrate ( - 0.5 (sd 10.4) v. - 3.9 (sd 9.7) mmol/l) and total SCFA (1.4 (sd 40.5) v. - 15.8 (sd 43.6) mmol/l) and counts of bifidobacteria (P < 0.05 time x diet interaction, for all).
Br J Nutr, 2009 · checked 2026-10-07 · independently re-checked - ev-lccon-08 · Observational data · prospective cohort
After additional adjustment for cereal fiber, the highest quintile of the LCD score was associated with a 10% (RR: 1.10, 95%CI: 1.02-1.19) increased risk for constipation, compared to the lowest quintile.
Gastroenterology, 2025 · checked 2026-10-07 · independently re-checked - ev-lcbs-10 · Position of an expert body · guideline
Very-low-carbohydrate eating plans should be avoided in those taking sodium–glucose cotransporter 2 (SGLT2) inhibitors because of the potential risk of ketoacidosis (105,106).
American Diabetes Association Professional Practice Committee, 5. Facilitating Positive Health Behaviors and Well-being to Improve Health Outcomes: Standards of Care in Diabetes-2026, Diabetes Care 2026;49(Suppl 1):S89-S131 · checked 2026-10-07 · independently re-checked - ev-lcbs-12 · Position of an expert body · guideline
Health care professionals should maintain consistent medical oversight of individuals following very-low-carbohydrate eating plans and recognize that insulin and other diabetes medications may need to be adjusted to prevent hypoglycemia, and blood pressure will need to be monitored.
American Diabetes Association Professional Practice Committee, 5. Facilitating Positive Health Behaviors and Well-being to Improve Health Outcomes: Standards of Care in Diabetes-2026, Diabetes Care 2026;49(Suppl 1):S89-S131 · checked 2026-10-07 · independently re-checked - ev-lcbs-13 · Mechanistic or laboratory data · case report
Literature investigation revealed that a strict low carbohydrate diet can rarely lead to DKA in the setting of SLGT-2 inhibitor use.
Clin Med Insights Case Rep, 2022 · checked 2026-10-07 · independently re-checked - ev-lcch-12 · Mechanistic or laboratory data · case series
Here, we describe a retrospective case series of 14 patients with ketogenic diet-induced hypercholesterolemia who experienced larger-than-expected LDL-C reductions after ezetimibe therapy.
Lipids Health Dis, 2026 · checked 2026-10-07 · independently re-checked
Review. Last updated 2026-10-08. Reviewed for evidence level, dose and population context, completeness of cautions, and claims a reader could misread. Bioma Learn has no human medical reviewer at this time, and we say so rather than invent one. Methodology. This is information, not medical advice.