Sugar in peas: sweet taste, modest numbers

The strongest evidence on this page is about legumes as a group, with peas never analyzed on their own. A meta-analysis pooled 24 randomized trials in 1,938 adults, some with type 2 diabetes, heart disease or high blood lipids. They ate about 3 oz (86 g) of legumes a day for at least six weeks, and fasting glucose fell by 3.2 mg/dL (95% CI 1.1 to 5.4; metric: 0.18 mmol/L, 0.06 to 0.30) while LDL cholesterol fell by 6.2 mg/dL (0.16 mmol/L). We found no trial of what green peas alone do to blood sugar. A 145 g cup of raw green peas carries about 8 g of sugars inside 21 g of carbohydrate, with 8.3 g of fiber alongside, by a single USDA value that shifts with variety and freshness. WHO asks people to keep free sugars under 10 percent of energy. Its definition of free sugars covers sugar added by a maker or cook, plus honey, syrups and juices, and the sugar inside a whole pea is not on that list.

What a real portion looks like

• The 2025-2030 US Dietary Guidelines count frozen, dried or canned vegetables and fruits as good options only when they have no or very limited added sugars. — US general population Evidence E source
  Frozen, dried or canned produce acceptable with no or very limited added sugars
• A 145 g cup of raw green peas carries about 8 g of sugars inside 21 g of carbohydrate, alongside 8.3 g of fiber, by the USDA survey database. — USDA survey food Green peas, raw (FNDDS 75120000) Evidence E source
  Per 100 g: total sugars 5.67 g, carbohydrate 14.45 g, fiber 5.7 g, energy 81 calories; 1 cup 145 g = 8.2 g sugars, 21.0 g carbohydrate, 8.3 g fiber, 117.5 calories

What your body absorbs

• In 40 meal studies, pulses gave a lower blood glucose rise than starchy control foods, mainly wheat products or white rice, in 28 and a lower insulin rise in 16 of 24. — 40 human intervention studies of non-oil-seed pulses against starchy control meals (n = 40 studies) Evidence C source
  Lower postprandial glucose in 28 of 40 studies and insulin in 16 of 24

What cooking and storage change

• Cooked peas from a can hold about half the sugars of freshly cooked peas in the USDA survey database, 3.0 against 5.9 g per 3.5 oz (100 g), with frozen in between at 4.4 g. — USDA survey foods Green peas fresh, frozen and canned, cooked, no added fat (FNDDS) Evidence E source
  Total sugars per 3.5 oz (100 g): fresh cooked 5.89 g, frozen cooked 4.39 g, canned cooked 2.99 g; per 160 g cup: 9.4, 7.0 and 4.8 g
• UK tables show sugar in peas varies widely by form: sugar-snap pods 3.7 g, raw peas 2.3 g and frozen peas cooked in a microwave 6.6 g per 3.5 oz (100 g), mostly sucrose except in the sugar-snap pods. — CoFID 2021 13-143 Peas, sugar-snap, raw; 13-438 Peas, raw; 13-528 Peas, frozen, microwaved Evidence E source
  Total sugars 3.7 / 2.3 / 6.6 g; sucrose 0.9 / 2.1 / 6.6 g; starch 1.3 / 7.0 / 4.2 g per 3.5 oz (100 g)

What it does to your health

• Across 24 randomized trials in 1,938 adults eating about 3 oz (86 g) of legumes a day for at least six weeks, fasting glucose fell by 3.2 mg/dL (0.18 mmol/L) and LDL cholesterol by 6.2 mg/dL (0.16 mmol/L). — 1,938 adults with and without type 2 diabetes, heart disease or dyslipidemia; 24 RCTs of at least 6 weeks, mean 86 g legumes a day (n = 1938) Evidence A source
  Fasting glucose MD -3.2 mg/dL (-5.4 to -1.1; metric: -0.18 mmol/L, -0.30 to -0.06); LDL-C -6.2 mg/dL (-9.3 to -3.1; metric: -0.16 mmol/L, -0.24 to -0.08); total cholesterol -8.9 mg/dL (-13 to -5; metric: -0.23 mmol/L, -0.33 to -0.13)

Safety, limits and interactions

• The 2025-2030 US Dietary Guidelines say no amount of added sugar is recommended as part of a healthy diet, and one meal should hold no more than 10 g of added sugars. — US general population Evidence E source
  No amount of added sugars recommended; at most 10 g added sugars per meal

What people believe that the data does not support

• The 2025-2030 US Dietary Guidelines define added sugars by ingredient names such as sugar, syrup or words ending in -ose, and say naturally occurring sugars in foods like fruit and plain milk are not added sugars. — US general population Evidence E source
  Naturally occurring sugars in whole foods are not counted as added sugars
• WHO's limit of free sugars below 10 percent of energy covers sugars added by the manufacturer, cook or consumer plus sugars in honey, syrups and fruit juices. Sugars inside whole peas are not on that list. — WHO guideline for adults and children Evidence E source
  Free sugars under 10% of total energy intake (strong recommendation); intrinsic sugars in whole vegetables not counted

What is still unknown

• In 38 trials with 2,095 people eating a median 4.6 oz (130 g) of whole pulses a day for 6 weeks, LDL cholesterol fell by 5.4 mg/dL (0.14 mmol/L), and the authors call for more studies on dried peas. — 2,095 participants in 38 randomized trials (52 comparisons), median 6 weeks, median 130 g/day pulses (n = 2095) Evidence A source
  LDL-C -5.4 mg/dL (95% CI -7.3 to -3.1; metric: -0.14 mmol/L, -0.19 to -0.08); non-HDL-C -8.5 mg/dL (-12 to -5.4; metric: -0.22 mmol/L, -0.30 to -0.14)

The bottom line

Sugar added to canned peas by the manufacturer is free sugar, so read the tin. Plain cooked peas vary by form. USDA survey records give 5.9 g of sugars per 3.5 oz (100 g) for fresh cooked peas, 4.4 g for frozen and 3.0 g for canned, though these are separate records and the canned peas may be a different variety or ripeness. UK tables disagree with USDA on raw peas: 2.3 g per 3.5 oz (100 g), against 3.7 g in sugar-snap pods and 6.6 g in frozen peas cooked in a microwave. The UK raw peas carry 7 g of starch per 3.5 oz (100 g) against 1.3 g in sugar-snap pods, and that gap between two national tables is the honest range. What the carbohydrate does to blood sugar after a meal is covered by weaker data. A review of 40 meal studies counted pulses giving a lower glucose rise than wheat foods or white rice in 28 of them, and a lower insulin rise in 16 of 24. It tallied results without pooling them, and peas sat among other pulses. Green peas as a vegetable have not been tested on their own. A 2026 meta-analysis of 38 trials in 2,095 people eating a median 4.6 oz (130 g) of whole pulses a day for 6 weeks found LDL fell by 5.4 mg/dL (95% CI 3.1 to 7.3; metric: 0.14 mmol/L, 0.08 to 0.19). Its authors ask for more studies on dried peas, which are a different food from the green ones. The cautions we hold are about added sugar, and none of them names peas. The US Dietary Guidelines for 2025 to 2030 say no amount of added sugar is recommended and cap one meal at 10 g of it. They count frozen or canned vegetables as good options when these have no or very limited added sugars. Their definition leaves out sugars that occur naturally in foods, and the examples they give are fruit and plain milk. Peas are not among them. We have no card on peas and allergy, pregnancy, children or medicines. That silence is a gap in what we have read, and it says nothing about safety either way.

Sources

1. pesu-dga-02 · agency guideline
   Frozen, dried, or canned vegetables or fruits with no or very limited added sugars can also be good options.
   USDA/HHS, Dietary Guidelines for Americans 2025-2030 (published 2026-01-07), p. 3 · checked 2026-09-29
2. pesu-r1-01 · USDA FNDDS survey food, dataset
   Green peas, raw (fdc_id 2709797, FNDDS 75120000): Total Sugars 5.67 g, Carbohydrate by difference 14.45 g, Fiber total dietary 5.7 g, Energy 81 kcal per 100 g; 1 cup 145 g: Total Sugars 8.2 g, Carbohydrate 21.0 g, Fiber 8.3 g, 117.5 kcal; Quantity not specified 73 g
   USDA FoodData Central survey (FNDDS), release 2024-10-31, food code 75120000, fdc_id 2709797 · checked 2026-09-29
3. pesu-r1-05 · systematic review
   Most of the articles in this review reported that non-oil-seed pulses cause lower glucose (28 of 40 studies) and insulin (16 of 24 studies) responses than other starchy foods in the control groups (mainly wheat-flour-based products or white rice).
   Nutr Rev, 2026 · checked 2026-09-29
4. pesu-r1-02 · USDA FNDDS survey foods, dataset
   Green peas, fresh, cooked, no added fat (fdc_id 2709959): Total Sugars 5.89 g per 100 g, 1 cup 160 g 9.4 g; Green peas, frozen, cooked, no added fat (fdc_id 2709960): Total Sugars 4.39 g per 100 g, 1 cup 160 g 7.0 g; Green peas, canned, cooked, no added fat (fdc_id 2709961): Total Sugars 2.99 g per 100 g, 1 cup 160 g 4.8 g
   USDA FoodData Central survey (FNDDS), release 2024-10-31, fdc_id 2709959, 2709960, 2709961 · checked 2026-09-29
5. pesu-r1-03 · composition dataset
   CoFID 2021 13-143 Peas, sugar-snap, raw: Total sugars (g) 3.7; Sucrose (g) 0.9; Glucose (g) 2.4; Fructose (g) 0.4; Starch (g) 1.3; Carbohydrate (g) 5.0; 13-438 Peas, raw: Total sugars (g) 2.3; Sucrose (g) 2.1; Starch (g) 7.0; Carbohydrate (g) 11.3; 13-528 Peas, frozen, microwaved: Total sugars (g) 6.6; Sucrose (g) 6.6; Starch (g) 4.2; Carbohydrate (g) 10.8
   CoFID 2021, Public Health England, codes 13-143, 13-438, 13-528, OGL v3.0 · checked 2026-09-29
6. pesu-r1-06 · meta-analysis of RCTs
   We identified 30 papers of 24 trials with 33 eligible comparisons where legumes (daily average 86 g (range 2-251)) were provided to 1,938 participants. No eligible studies reported on microbiome outcomes. There was moderate certainty evidence that higher legume intakes improved total cholesterol (mean difference (MD) -0.23mmol/L, 95%CI -0.33 to -0.13), LDL cholesterol (MD -0.16mmol/L (-0.24 to -0.08)), and fasting blood glucose (MD -0.18mmol/L (-0.30 to -0.06)).
   Eur J Nutr, 2024 · checked 2026-09-29
7. pesu-dga-01 · agency guideline
   While no amount of added sugars or non-nutritive sweeteners is recommended or considered part of a healthy or nutritious diet, one meal should contain no more than 10 grams of added sugars.
   USDA/HHS, Dietary Guidelines for Americans 2025-2030 (published 2026-01-07), p. 4 · checked 2026-09-29
8. pesu-dga-03 · agency guideline
   To help identify sources of added sugars, look for ingredients that include the word “sugar” or “syrup” or end in “-ose.” ... Some foods and drinks, such as fruits and plain milk, have naturally occurring sugars. The sugars in these foods are not considered added sugars.
   USDA/HHS, Dietary Guidelines for Americans 2025-2030 (published 2026-01-07), p. 4 · checked 2026-09-29
9. pesu-r1-04 · WHO guideline
   In both adults and children, WHO recommends reducing the intake of free sugars to less than 10% of total energy intake2 (strong recommendation). ... Free sugars include monosaccharides and disaccharides added to foods and beverages by the manufacturer, cook or consumer, and sugars naturally present in honey, syrups, fruit juices and fruit juice concentrates.
   WHO Guideline: sugars intake for adults and children, 2015 · checked 2026-09-29
10. pesu-r1-07 · meta-analysis of RCTs
    Thirty-eight trials (52 trial comparisons, n=2095) with a median of 6 weeks and dose of 130 g/d (0.5-0.67 cup/d) showed that whole dietary pulses decreased low-density lipoprotein-cholesterol (mean difference, -0.14 mmol/L [95% CI, -0.19 to -0.08]), non-high-density lipoprotein-cholesterol (-0.22 mmol/L [95% CI, -0.30 to -0.14]), apoB (apolipoprotein B) (-0.08 g/L [95% CI, -0.13 to -0.03]) and high-density lipoprotein-cholesterol (-0.03 mmol/L [95% CI, -0.05 to -0.01]) with no effects on other lipids. ... Future studies on chickpeas, dried peas, and lentils are warranted.
    J Am Heart Assoc, 2026 · checked 2026-09-29