Frequently Asked Question
Health & NutritionWhat About Anti-Nutrients (Lectins, Oxalates, Phytates)?
Last reviewed: April 12, 2026
Summary
Anti-nutrients do reduce mineral absorption in isolated settings, but the effects are substantially diminished by normal cooking, soaking, and food preparation. The same compounds often have documented health-promoting properties, and populations eating the most legumes consistently show the best health outcomes.
Supported by 2 cited sources
Evidence Summary
What Are Anti-Nutrients? Plant foods contain compounds -- phytic acid, oxalates, and lectins -- that can reduce the absorption of minerals like iron, zinc, and calcium. Critics argue these make plant nutrition misleadingly good on paper. ## What the Science Actually Shows ### The Term Is Misleading A 2020 review in Nutrients concluded that the term "anti-nutrient" is misleading in the context of normal, varied diets.
Supporting Evidence
Based on controlled studies of soaking, cooking, fermentation, and sprouting effects on anti-nutrient content.
The Blue Zones with highest legume consumption have the greatest longevity, contradicting concerns about anti-nutrients.
Sources & Evidence
2 sources cited across 2 claims
1
Cooking eliminates lectins; preparation reduces other anti-nutrients
RCTChanges in levels of phytic acid, lectins and oxalates during soaking and cooking of Canadian pulses — Abdel-Aal ESM, Rabalski I (2018)
2
High-legume populations have best health outcomes
Cohort StudyIs There Such a Thing as "Anti-Nutrients"? A Narrative Review of Perceived Problematic Plant Compounds — Petroski W, Minich DM (2020)