Breakfast burrito: what is known about the wrap and the meal

Nobody has studied the breakfast burrito itself. The research we hold is about its parts: breakfast as a habit, and the corn or flour tortilla it comes wrapped in. Read everything on this page as evidence about those pieces, since none of it tested the whole thing on a plate. The version we can put numbers on is the American egg burrito. A typical one weighs 180 g and gives about 448 kcal and 19.6 g of protein. It also carries 846 mg of sodium, roughly 37 percent of the Daily Value, plus 8.0 g of saturated fat and 382 mg of cholesterol. The sausage version reaches about 920 mg of sodium. The case for eating breakfast at all is weaker than its reputation. Pooling 7 randomised trials in 425 adults over about 8.6 weeks, the people who skipped breakfast ended up 0.54 kg lighter, and in the 3 trials that measured it, LDL cholesterol rose by 9.24 mg/dL. A review done for the Nordic nutrition recommendations looked at 24 reviews of meal patterns, rated every one of them low or critically low in quality, and found no consistent basis for a meal-pattern recommendation in healthy people.

How much is actually in it

• One 180 g egg burrito carries about 846 mg sodium, roughly 37% of the 2,300 mg Daily Value, plus 8.0 g saturated fat and 382 mg cholesterol, and the sausage version reaches about 920 mg sodium. — US household measures, FNDDS (n = FNDDS 5,432 foods) Evidence E source
  Sodium 846 mg plain, 919.6 mg with sausage per item, saturated fat 8.0 g, cholesterol 381.6 mg

What a real portion looks like

• A typical US egg burrito weighs 180 g and gives about 448 kcal and 19.6 g protein, and the sausage version at 190 g gives about 488 kcal. — US household measures, FNDDS (n = FNDDS 5,432 foods) Evidence E source
  Egg burrito 180 g 448.2 kcal 19.6 g protein, with sausage 190 g 488.3 kcal 21.4 g protein

What your body absorbs

• In 10 adult women, fractional zinc absorption from corn tortilla was 0.35 to 0.37 with or without added zinc, and adding iron at 30 or 60 mg/kg flour did not lower it. — healthy Mexican women aged 21 to 51, two phases of 10, stable isotope test meals (n = 20) Evidence B source
  Fractional zinc absorption 0.35, 0.36, 0.37, unchanged by iron at 30 and 60 mg/kg
• In 24 children aged 5 to 7, only 3.8% of reduced elemental iron added to corn masa tortillas was absorbed, and adding Na2EDTA raised it to 5.1% without statistical significance. — children aged 5 to 7, two groups of 12, stable isotope tortilla meals (n = 24) Evidence B source
  Iron bioavailability 3.8% (2.7-5.3), 5.1% with Na2EDTA, P = 0.18
• In Guatemalan girls aged 12 to 13 eating corn tortilla and black bean meals, iron absorption was 9.0% when the flour was fortified with NaFeEDTA against 5.5% with ferrous sulfate. — Guatemalan girls aged 12 to 13, stable isotope test meals Evidence B source
  Iron bioavailability 9.0% NaFeEDTA vs 5.5% ferrous sulfate, P = 0.009

What cooking and storage change

• In 5 women, calcium absorption from tortillas made with low-phytate maize was 50% against 35% from ordinary maize, and nixtamalization itself lowers maize phytate only modestly. — 5 healthy adult women, about 140 g tortillas in place of breakfast, dual isotope (n = 5) Evidence B source
  Fractional calcium absorption 0.50 vs 0.35, P = 0.003

What it does to your health

• In a meta-analysis of 7 randomised trials with 425 adults lasting about 8.6 weeks, skipping breakfast lowered body weight by 0.54 kg and raised LDL cholesterol by 9.24 mg/dL in the 3 trials that measured it, compared with eating breakfast. — adults 18 and over, 7 RCTs, 425 participants, mean 8.6 weeks (n = 425) Evidence A source
  Weight WMD -0.54 kg (95% CI -1.05 to -0.03), LDL WMD +9.24 mg/dL (2.18 to 16.30, 3 trials)
• A systematic review of 16 trials covering 50,066 children and adolescents found negligible effects of breakfast skipping on overweight in randomised trials, while 10 studies linked skipping to lower diet quality. — children and adolescents, RCTs and intervention longitudinal trials over 2 months, 2000-2021 (n = 50066) Evidence A source
  RCTs negligible effect on overweight, 10 of 16 studies lower diet quality in skippers
• In 18 overweight women, skipping breakfast raised the insulin and free fatty acid response to lunch only in the 9 habitual breakfast eaters, while the 9 habitual skippers responded the same on both days. — 18 overweight women, 9 habitual breakfast eaters and 9 habitual skippers, single test days (n = 18) Evidence B source
  Insulin AUC P = 0.020, FFA AUC P = 0.023 higher on no-breakfast day in eaters only
• Over 7 days in adolescent girls who usually skip breakfast, eating a standard breakfast raised daily fibre intake with an effect size of 1.31 and left physical activity energy expenditure unchanged. — adolescent girls who habitually skip breakfast, two 7-day free-living conditions Evidence B source
  Fibre intake higher, p = 0.005, d = 1.31, no change in PAEE

Safety, limits and interactions

• In a 2023 Finnish school outbreak with 721 ill, flour tortillas were linked to illness with an adjusted odds ratio of 3.3, and samples held over 24,000 mg/kg calcium propionate against a 2,000 mg/kg legal limit. — pupils and staff of 17 schools in one Finnish municipality, August 2023 (n = 721) Evidence C source
  AOR 3.3 (95% CI 1.4-7.4) for tortillas
• Among 915 Mexican adults aged 40 and over, each maize tortilla eaten a day was associated with 2.0% higher blood aflatoxin adducts, driven mostly by homemade masa tortillas. — 915 adults aged 40 and over in south and eastern Mexico, 2018-2019 (n = 915) Evidence C source
  +2.0% AFB1-lys per tortilla (95% CI 0.6-3.4), +2.8% for homemade masa

What people believe that the data does not support

• A review of 24 reviews for the Nordic Nutrition Recommendations 2023, all rated low or critically low quality, found only a minor weight effect of skipping breakfast in adult trials and no consistent basis for a meal-pattern recommendation in healthy people. — 24 reviews on meal patterns in healthy people of all ages (n = 24 reviews) Evidence A source
  Minor weight effect in adult RCTs, mixed in children

Who this works differently for

• A 2019 US survey of 43 corn masa flour and tortilla products found that none of the corn tortillas carried the voluntary folic acid fortification FDA allowed in 2016. — corn masa flour and corn tortilla products photographed in stores in 28 US states (n = 43 products) Evidence C source
  3 masa flours fortified, 0 corn tortillas
• Among 197 Mexican university freshmen who ate breakfast, those in the top breakfast quality tertile took in more protein and calcium, mainly from eggs, milk, nixtamalized tortilla, cheese and processed meats. — 230 Mexican freshmen aged about 18.5, 197 breakfasters, two 24-h recalls (n = 197) Evidence C source
  Protein p = 0.007, calcium p = 0.050 higher in top tertile

The bottom line

If you like a burrito in the morning, the number to watch is the sodium. One egg burrito uses up more than a third of a day's Daily Value before lunch, and sausage pushes it higher. The weight argument is the wrong reason to eat breakfast or to skip it. In the adult trials the difference was about half a kilo. In children and teenagers, a review of 16 studies covering 50,066 young people found the randomised trials showed a negligible effect of skipping breakfast on overweight. Ten of those 16 studies did link skipping to a poorer diet overall. That fits a small finding in teenage girls who usually went without breakfast: eating one for 7 days raised their fibre intake and left their physical activity unchanged. How your body handles skipping may depend on what it is used to. In 18 overweight women, going without breakfast raised the insulin and fat response to lunch only in the 9 who normally ate breakfast. That was measured on single test days in a handful of people, so it is a lead worth repeating on a larger group, and too thin to plan a morning around. The tortilla research is narrower than it looks. It comes from small isotope studies, mostly in Mexico and Guatemala, and most of it measured flour fortified with added iron or zinc. In 24 children aged 5 to 7, only 3.8 percent of the reduced elemental iron powder added to corn tortillas was absorbed. In Guatemalan girls, iron absorption reached 9.0 percent when the flour was fortified with NaFeEDTA against 5.5 percent with ferrous sulfate. In 10 women, added iron did not lower how much zinc they absorbed from corn tortilla. Calcium absorption in 5 women was 50 percent from tortillas made with a low-phytate maize against 35 percent from ordinary maize, and the lime treatment used to make masa lowers phytate only modestly. Two safety findings are real and specific. In a 2023 Finnish school outbreak with 721 people ill, flour tortillas were linked to illness with an adjusted odds ratio of 3.3, and samples held more than 24,000 mg/kg of the preservative calcium propionate against a legal limit of 2,000 mg/kg. That was one faulty batch with far too much preservative, and it says nothing about tortillas made within the limit. In 915 Mexican adults aged 40 and over, each maize tortilla eaten a day went with 2.0 percent more aflatoxin markers in the blood, mostly from homemade masa. Aflatoxin is a mould toxin, and that study measured a marker of exposure in blood. It did not look at illness. If you rely on fortified grain for folic acid, a 2019 US survey of 43 corn masa flour and tortilla products found that none of the corn tortillas had any added. What we cannot tell you is who should be careful with this meal. We hold no card on the breakfast burrito in pregnancy, in kidney disease, in food allergy or alongside any medicine, and our USDA table has no entry for it, so the nutrient figures above come from the US food survey database alone.

Sources

1. bbur-b1-15 · reference dataset
   FNDDS 2707343 Egg burrito: Sodium 470 mg/100 g, 1 item 180 g 846.0 mg · Fatty acids, total saturated 8.0 g · Cholesterol 381.6 mg · FNDDS 2707344 Egg burrito, with sausage: Sodium 484 mg/100 g, 1 item 190 g 919.6 mg
   USDA FNDDS 2021-2023 · checked 2026-09-23
2. bbur-b1-14 · reference dataset
   FNDDS 2707343 Egg burrito: Energy 249 kcal/100 g, 1 item 180 g 448.2 kcal, Protein 10.91 g/100 g, 19.6 g · FNDDS 2707344 Egg burrito, with sausage: Energy 257 kcal/100 g, 1 item 190 g 488.3 kcal, Protein 21.4 g
   USDA FNDDS 2021-2023 · checked 2026-09-23
3. bbur-b1-05 · randomised crossover trial
   The mean (+/- SEM) fractional zinc absorption from unfortified tortilla, tortilla fortified with zinc oxide, and tortilla fortified with zinc sulfate did not differ among treatments: 0.35 +/- 0.07, 0.36 +/- 0.05, and 0.37 +/- 0.07, respectively. ... Simultaneous addition of zinc and iron to corn tortilla does not modify zinc bioavailability at iron doses of 30 and 60 mg/kg of corn flour.
   Food Nutr Bull, 2012 · checked 2026-09-23
4. bbur-b1-06 · randomised trial
   Two groups of 5- to 7-y-old children (n = 12/group) were fed tortillas ... the geometric mean (+/-range 1 SD) bioavailability of reduced iron in tortilla was 3.8% (2.7-5.3). The addition of Na(2)EDTA, tended to increase it (P = 0.18) to 5.1% (2.8-9.2).
   J Nutr, 2004 · checked 2026-09-23
5. bbur-b1-07 · randomised crossover trial
   Geometric mean iron bioavailability from test meals fortified with ferrous sulfate was 5.5% and was significantly higher in test meals fortified with NaFeEDTA (9.0%; P = 0.009, paired t test).
   Am J Clin Nutr, 2002 · checked 2026-09-23
6. bbur-b1-08 · crossover clinical trial
   Bioavailability of calcium is, however, compromised by phytate, which is present in large quantities in maize kernels and is only modestly reduced by nixtamalization. ... Mean fractional absorption of calcium from tortillas prepared from the low-phytate maize (0.50 +/- 0.03) was significantly (P = 0.003) greater than that from tortillas prepared from the control maize (0.35 +/- 0.07).
   Am J Clin Nutr, 2005 · checked 2026-09-23
7. bbur-b1-01 · meta-analysis of RCTs
   breakfast skipping significantly reduced body weight (weighted mean difference [WMD] = -0.54 kg [95% CI: -1.05 to -0.03], P = 0.04 ... which was increased in breakfast skippers as compared with breakfast consumers (WMD = 9.24 mg/dL [95% CI: 2.18 to 16.30], P = 0.01)
   Obesity (Silver Spring), 2020 · checked 2026-09-23
8. bbur-b1-02 · systematic review
   identified 584 articles, of which 16 were suitable for inclusion. Overall, 50,066 children and adolescents were included. ... Two longitudinal studies reported a high prevalence of OW/OB in breakfast skippers, whereas RCTs had negligible effects. Ten studies reported a lower-quality dietary intake in breakfast skippers.
   Nutrients, 2021 · checked 2026-09-23
9. bbur-b1-03 · randomised crossover trial
   Nine Eaters and nine Skippers were studied ... Both insulin (P = 0.020) and FFA (P = 0.023) AUC were higher on the NB day for Eaters but similar on both days for Skippers.
   Obesity (Silver Spring), 2015 · checked 2026-09-23
10. bbur-b1-04 · randomised crossover trial
    Breakfast manipulation did not affect PAEE or PA duration. Daily fibre intake was higher (p = 0.005; d = 1.31)
    Nutrients, 2021 · checked 2026-09-23
11. bbur-b1-09 · retrospective cohort
    consumption of flour tortillas and vegetable filling served at lunch were statistically associated with illness (adjusted odds ratio (aOR) = 3.3; 95% confidence interval (CI): 1.4-7.4 for the tortillas ... high concentrations of calcium propionate (E 282) were measured (> 24,000 mg/kg), exceeding the regulatory maximum limit of 2,000 mg/kg.
    Euro Surveill, 2026 · checked 2026-09-23
12. bbur-b1-10 · cross-sectional
    For every maize tortilla consumed, the concentration of circulating AFB1-lys was 2.0% (95% CI: 0.6%, 3.4%) higher. The corresponding estimate for homemade masa tortilla was 2.8% (95% CI: 1.1%, 4.6%).
    Am J Clin Nutr, 2025 · checked 2026-09-23
13. bbur-b1-12 · scoping review
    All reviews were rated low or critically low (AMSTAR 2). ... Among adults, randomized controlled trials on breakfast skipping showed a minor impact on improved weight loss. ... No consistent results providing evidence for setting recommendations for meal patterns were shown.
    Food Nutr Res, 2024 · checked 2026-09-23
14. bbur-b1-11 · product survey
    People from 28 states shared photos of 132 products, including 43 unique corn masa flour or corn tortilla products. ... None of the corn tortilla products were fortified.
    Birth Defects Res, 2019 · checked 2026-09-23
15. bbur-b1-13 · cross-sectional
    breakfasters in the highest BQI tertile had significantly greater intakes of protein (p = 0.007) and calcium (p = 0.050), primarily derived from eggs, milk, lime-treated (nixtamalized) tortilla, cheese, and processed meats.
    Appetite, 2026 · checked 2026-09-23