Micronutrient Gap Report 2026

• Vitamin D is the single most common shortfall in every region we examined, with inadequacy rates between 40% (EU adults) and 94% (US adults below the EAR).
• Fiber, potassium and choline are the largest "shortfall nutrients" in the US — >90% of adults fall short on each.
• Iodine deficiency has re-emerged in Europe, with ~44% of European school-age children below the WHO urinary iodine threshold.
• Iron remains the dominant gap in premenopausal women across all three regions (22–26% below recommendation).
• Magnesium shortfall affects roughly half of US adults and shows up consistently in EU surveys — yet rarely makes clinical bloodwork because serum magnesium is a poor marker.

The clearest pattern: the nutrients that suffer most are the ones concentrated in foods people eat least — leafy greens, legumes, oily fish, whole grains, seeds and organ meats.

The US National Health and Nutrition Examination Survey (NHANES) is the largest and best-instrumented dietary survey in the world. The figures below are share of adults below the Estimated Average Requirement (EAR) or, for fiber, potassium and choline, below the Adequate Intake (AI).

EFSA's pan-European intake data and the ODIN vitamin-D consortium give the cleanest read on European gaps. Iodine status is tracked separately by the Iodine Global Network and has been moving in the wrong direction in Western Europe over the last decade.

Sweden is interesting because the soil is selenium-poor and UV-B drops to near-zero for nearly half the year — two structural reasons local diets struggle with specific nutrients. Livsmedelsverket's Riksmaten Adults survey is the authoritative source.

Three structural reasons recur across every survey we looked at:

• Energy-dense, nutrient-sparse foods dominate. Ultra-processed foods supply ~57% of US adult calories but contribute disproportionately little magnesium, potassium, folate or fiber.
• Sun, soil and season. Vitamin D, iodine and selenium intakes depend heavily on latitude, fortification policy and local soil — three things diet alone can't fix.
• Bloodwork misses most gaps. Serum magnesium, serum zinc and serum B12 are insensitive to early deficiency. By the time the lab flag fires, the dietary shortfall has usually been chronic.

Across every shortfall above, the same six food groups do most of the work:

• Leafy greens — folate, magnesium, vitamin K, potassium.
• Legumes — fiber, magnesium, iron, folate, potassium.
• Oily fish — vitamin D, omega-3 EPA/DHA, iodine, selenium, B12.
• Nuts & seeds — magnesium, vitamin E, zinc, omega-3 ALA.
• Whole grains — fiber, magnesium, B vitamins, selenium.
• Organ meats & eggs — choline, B12, vitamin A, iron, selenium.

Most gaps close with adjustments measured in servings per week, not supplements. VitaMenda's recommendation engine is built around exactly this whole-food-first hierarchy — see the methodology page for detail.

Figures in this report are aggregated from peer-reviewed analyses of national dietary surveys. We did not run a primary survey. Where multiple estimates exist for the same nutrient, we use the most recent published figure and prefer government datasets (NHANES, EFSA, Livsmedelsverket) over meta-analyses.

"Below adequate" means below the Estimated Average Requirement (EAR) where one is defined, and below the Adequate Intake (AI) for nutrients that have only an AI (fiber, potassium, choline). Vitamin D figures use 25(OH)D status thresholds (50 nmol/L for EU comparisons) where intake data is unreliable.

See our editorial policy and accuracy page for how we source and review numeric claims.

• Reider CA, Chung RY, Devarshi PP, et al. Inadequacy of Immune Health Nutrients: Intakes in US Adults, the 2005–2016 NHANES. Nutrients, 2020.
• Hoy MK, Goldman JD. Fiber intake of the U.S. population. USDA Agricultural Research Service, Dietary Data Brief.
• Cashman KD, et al. Vitamin D deficiency in Europe: pandemic? American Journal of Clinical Nutrition, 2016 (ODIN consortium).
• EFSA Comprehensive European Food Consumption Database (current release).
• Iodine Global Network — Global Scorecard of Iodine Nutrition, 2023.
• Livsmedelsverket. Riksmaten — vuxna 2010–11: Vad äter svenskarna?
• Nordic Council of Ministers. Nordic Nutrition Recommendations (NNR2023).
• Martínez Steele E, et al. Ultra-processed foods and added sugars in the US diet. BMJ Open, 2016.

Citation suggestion: VitaMenda Micronutrient Gap Report 2026. Available at https://vitamenda.com/micronutrient-gap-report-2026.