Honey on whole wheat bread: two foods, judged one at a time

An umbrella review of 69 randomized trials in 3544 adults found that 10 g of honey a day may lower HbA1c, the long-term blood sugar marker, but adversely affect systolic blood pressure, triglycerides and fasting glucose. Only 16 of those trials tested honey, and the abstract gives no effect sizes for it, so treat this as a direction. We found no trial of honey and whole wheat bread eaten together, so each half of the plate is judged on its own evidence. A tablespoon of honey weighs 20 g and carries about 16.4 g of sugars, recalculated from the USDA value per 3.5 oz (100 g). A medium 1.3 oz (36 g) slice of whole wheat bread adds about 91 calories and 2.2 g of fiber. The bread's best documented strength is calcium uptake. In a 1991 study of healthy women, whose abstract does not say how many took part, they absorbed about 82% (0.817) of the calcium in leavened whole-wheat bread against about 59% (0.589) from milk at a comparable load. The bread holds little calcium to start with, so this is a high share of a small amount.

How much is actually in it

• Per 100 g, honey in the UK composition tables has 288 calories and 76.4 g of sugars (41.8 g fructose, 34.6 g glucose) with no fiber and 0.4 g protein. — — Evidence E source
  Per 100 g: Energy 288 calories, Total sugars 76.4 g, Fructose 41.8 g, Glucose 34.6 g, NSP 0.0 g, Protein 0.4 g

What a real portion looks like

• A tablespoon of honey weighs 20 g and carries about 16.4 g of sugars, while a medium slice of whole wheat bread weighs 1.3 oz (36 g) with about 91 calories and 2.2 g of fiber. — — Evidence E source
  Honey 1 tbsp 20 g, 82.12 g sugars/100 g; whole wheat bread 1 medium slice 36 g, 254 calories and 6 g fiber per 3.5 oz (100 g)

What your body absorbs

• In a randomized crossover trial in 20 healthy adults, 3.5 oz (100 g) of honey left about 10.3 g of carbohydrate unabsorbed and 50 g left about 5.9 g. — 20 healthy volunteers (13 males, 7 females), mean age 35.9 y (n = 20) Evidence B source
  Malabsorbed carbohydrate 10.3 +/- 1.8 g after 100 g honey, 5.9 +/- 1.2 g after 50 g honey, 0.5 +/- 0.2 g after a glucose-fructose mixture
• In a study in healthy women, fractional calcium absorption from leavened whole-wheat bread averaged 0.817 against 0.589 from milk at a comparable load in the same women. — healthy adult women Evidence B source
  Fractional absorption 0.817 +/- 0.124 (bread) vs 0.589 +/- 0.111 (milk)

What cooking and storage change

• In healthy women, calcium absorption from yeast-leavened whole-wheat bread averaged 0.703, significantly more than the 0.652 from cookies made with the same flour. — healthy adult women Evidence B source
  Fractional absorption 0.703 +/- 0.108 (leavened bread) vs 0.652 +/- 0.087 (cookies), P < 0.01
• In a crossover trial in 8 healthy men eating 11 oz (300 g) of whole wheat bread, bioprocessing the bran made ferulic and other phenolic acids 2 to 3 times as bioavailable. — 8 healthy men, single 11 oz (300 g) serving after 3 days of low phenolic acid diet (n = 8) Evidence B source
  Bioavailability of ferulic, vanillic, sinapic and 3,4-dimethoxybenzoic acid 2- to 3-fold vs control bread

What it does to your health

• An umbrella meta-analysis of 69 RCTs with 3544 participants found that 10 g of honey a day may lower HbA1c but adversely affect systolic blood pressure, triglycerides and fasting glucose. — adults in 69 RCTs of honey, royal jelly or propolis (16 honey trials) (n = 3544) Evidence A source
  10 g/day honey: possible HbA1c reduction; adverse direction for SBP, AST, triglycerides, fasting glucose, hs-CRP (sizes not in abstract)
• A meta-analysis of 169 controlled feeding trials (n = 10,357) found honey added to the diet among sugar sources that decreased body weight, unlike sugar-sweetened beverages. — adults in 169 controlled trials of at least 2 weeks, median 12 weeks (n = 10357) Evidence A source
  Direction only for honey in addition trials (decrease); total fructose-containing sugars in addition trials +0.62 lb (95% CI 0.13 to 1.1; metric: 0.28 kg, 0.06 to 0.50)

Safety, limits and interactions

• CDC advises not to give honey to children younger than 12 months because it may cause infant botulism. — infants under 12 months Evidence E source
  —
• A meta-analysis of 57 studies put the pooled lead content of honey in Arab countries at 0.12 mg/kg, with a margin of exposure of 48 for young children, signaling potential concern. — honey samples from Arab countries; risk modeled for adults and young children (n = 57 studies) Evidence C source
  Pooled mean lead 0.12 mg/kg (95% CI 0.07 to 0.21); margin of exposure 48 (9 to 2273) for children vs 363 and 865 for adults

What people believe that the data does not support

• The EU refused the claim that honey helps support and maintain a healthy digestive system. — — Evidence E source
  Status Non-authorized
• The EU refused antioxidant claims for honey, including that it helps increase the antioxidative capacity of the body. — — Evidence E source
  Status Non-authorized

Who this works differently for

• In the same trial, 6 of 20 healthy adults reported loose stools within 10 hours of 3.5 oz (100 g) of honey, 3 after 50 g, and none after a glucose-fructose mixture. — 20 healthy volunteers (13 males, 7 females) (n = 20) Evidence B source
  Loose stools 6/20 after 100 g honey, 3/20 after 50 g, 0/20 after glucose-fructose mixture; chi 2 = 7.1, P < 0.03

The bottom line

A second meta-analysis, of 169 controlled feeding trials in 10,357 adults over a median of 12 weeks, placed honey among the sugar sources whose addition to the diet decreased body weight. Sugar-sweetened drinks went the other way. Honey was one of 14 sources there and its own effect size is not in the abstract. This is a direction across pooled trials, not evidence that adding honey to food will make anyone lose weight. The two reviews do not line up neatly, and because neither reports a number for honey alone, we cannot say which picture is closer to what a daily spoonful does. Honey's sugar figure depends on the table. The UK lists 288 calories and 76.4 g of sugars per 3.5 oz (100 g), of which 41.8 g is fructose and 34.6 g glucose, with no fiber. USDA gives 82.12 g of sugars, and the gap is the natural spread of honey from different flowers. Large amounts of honey are not fully absorbed. In a 1995 crossover trial in 20 healthy adults who drank honey dissolved in water, 100 g left about 10.3 g of carbohydrate unabsorbed and 50 g left about 5.9 g, estimated from breath hydrogen. Six of the 20 reported loose stools within 10 hours of the larger dose and three after 50 g. A hundred grams is about five tablespoons, far above what goes on a slice of toast. How the bread is made changes what you take from it. In healthy women, calcium absorption from yeast-leavened whole-wheat bread averaged 0.703, significantly more than the 0.652 from cookies baked from the same flour, and the authors credit yeast fermentation breaking down phytate. In 8 healthy men who ate 11 oz (300 g) of whole wheat bread, a version made with bioprocessed bran gave 2 to 3 times the bioavailability of ferulic and other phenolic acids seen with the control bread. That was one meal measuring blood markers, and bioprocessed bran is not what ordinary shop bread uses. Honey sellers' health claims have been examined and refused. All 8 honey entries in the EU register are non-authorized, including that honey supports a healthy digestive system and that it raises the body's antioxidant capacity. Two cautions are backed by evidence. Do not give honey, plain or baked into something, to a baby under 12 months, because CDC warns it may cause infant botulism, a severe food poisoning. A meta-analysis of 57 surveys of honey from Arab countries found a pooled lead content of 0.12 mg/kg and a margin of exposure of 48 for young children, which the authors flag as potential concern. They also note that assuming children eat as much honey as adults may overstate that risk, and honey from other regions was not part of the analysis. We have no card on whole wheat bread and wheat allergy or celiac disease, so this page cannot speak to either.

Sources

1. hwr6-08 · food composition dataset
   Honey (17-050): Energy 288 kcal | Carbohydrate 76.4 g | Total sugars 76.4 g | Fructose 41.8 g | Glucose 34.6 g | NSP 0.0 g | Protein 0.4 g | Water 17.5 g
   CoFID 2021 (Public Health England, OGL v3.0), code 17-050 Honey · checked 2026-10-02
2. hwr6-09 · food composition dataset
   Honey, FNDDS 91302010, fdc_id 2710281: 1 tablespoon 20 g | Guideline amount per slice of bread 10 g || Total Sugars 82.12 g per 100 g; Bread, whole wheat, FNDDS 51300110, fdc_id 2707709: 1 medium or regular slice 36 g || Energy 254 kcal | Fiber, total dietary 6 g per 100 g
   USDA FNDDS (FoodData Central survey 2024-10-31), Honey food code 91302010 fdc_id 2710281; Bread, whole wheat food code 51300110 fdc_id 2707709 · checked 2026-10-02
3. hwr6-01 · randomized crossover trial
   The estimated carbohydrate malabsorption was 10.3 +/- 1.8, 5.9 +/- 1.2, and 0.5 +/- 0.2 g after 100 g honey, 50 g honey, and the glucose-fructose mixture, respectively (F[2,57] = 16.05, P < 0.001).
   Am J Clin Nutr, 1995 · checked 2026-10-02
4. hwr6-03 · randomized crossover trial
   In the first study, fractional calcium absorption from leavened whole-wheat bread averaged 0.817 +/- 0.124. By comparison, absorption from milk, ingested at a comparable load in the same women, averaged only 0.589 +/- 0.111.
   J Nutr, 1991 · checked 2026-10-02
5. hwr6-04 · randomized crossover trial
   Calcium absorption from cookies was not affected by the extent of browning and averaged 0.652 +/- 0.087. However, calcium absorption from bread in these same women averaged 0.703 +/- 0.108. This was significantly more than from the cookies (P less than 0.01).
   J Nutr, 1991 · checked 2026-10-02
6. hwr6-05 · randomized crossover trial
   The bioavailabilities of ferulic acid, vanillic acid, sinapic acid, and 3,4-dimethoxybenzoic acid from the bioprocessed bread were 2- to 3-fold those from the control bread.
   J Nutr, 2011 · checked 2026-10-02
7. hwr6-06 · meta-analysis of RCTs
   Analysis of 69 RCTs with 3544 participants revealed that 10 g of honey daily may lower Hemoglobin A1C but adversely affect systolic blood pressure, Aspartate transferase, triglycerides, fasting blood glucose, and high-sensitive C-reactive protein.
   Nutr Diabetes, 2025 · checked 2026-10-02
8. hwr6-07 · meta-analysis of controlled trials
   We included 169 trials (255 trial comparisons, n = 10,357) assessing 14 food sources at 4 energy control levels over a median 12 wk. ... addition trials [dried fruits, honey, fruits (≤10%E), and 100% fruit juice (≤10%E) decreased; SSBs, fruit drink, and mixed sources (with SSBs) increased]
   Am J Clin Nutr, 2023 · checked 2026-10-02
9. hwr6-12 · government agency guidance page
   Honey given to children younger than 12 months may cause a severe food poisoning called botulism.
   CDC, Infant and Toddler Nutrition: Foods and Drinks to Avoid or Limit, 2026 · checked 2026-10-02
10. hwr6-13 · meta-analysis of contamination surveys
    A regional pooled mean concentration of 0.12 mg/kg [95%CI: 0.07-0.21] (0.13 mg/kg, if non-detects are considered at their highest possible value) was obtained. Margins of exposure of 363 [71-17182] and 865 [168-40909] were calculated for adults, and of 48 [9-2273] for children, indicating potential concern for the latter population subset.
    Food Addit Contam Part A Chem Anal Control Expo Risk Assess, 2024 · checked 2026-10-02
11. hwr6-10 · regulatory register entry
    POL-HC-7261 Honey 'Helps support and maintain a healthy digestive system. Non-authorised
    EU Register on nutrition and health claims, claim POL-HC-7261, snapshot 2026-09-21 · checked 2026-10-02
12. hwr6-11 · regulatory register entry
    POL-HC-7263 Honey Helps increase the antioxidative capacity of the body 2. Has antioxidant properties 3. Contains naturally occuring antioxidants 4. Antioxidants help protect you from radicals which cause cell damage 5. Antioxidants contribute to the total antioxidant capacity of the body and help strenghthen our body's defences 6. Antioxidants help to protect our body by reinforcing the body's natural defence against the harmful effects of free radicals 7. Acts as an antioxidants 8.Good source of antioxidant 9.Show antioxidative activity and help protect against oxidative stress Non-authorised
    EU Register on nutrition and health claims, claim POL-HC-7263, snapshot 2026-09-21 · checked 2026-10-02
13. hwr6-02 · randomized crossover trial
    Within 10 h after the ingestion of 100 g honey, 50 g honey, and the glucose-fructose mixture, six, three and none of the volunteers, respectively, reported loose stools (chi 2 = 7.1, df = 2, P < 0.03).
    Am J Clin Nutr, 1995 · checked 2026-10-02