Frequently Asked Question
Health“Vegan diets are deficient / unsafe”
Last reviewed: January 9, 2026
Summary
Major dietetic bodies have stated that *appropriately planned* vegetarian/vegan diets can be nutritionally adequate across life stages. The key is planning around a small set of nutrients of concern (especially vitamin B12).
Evidence Summary
- Position statements: well-planned vegetarian/vegan diets can be healthful and nutritionally adequate across life stages.
- Common nutrient “watch list” includes B12 (critical), iodine, iron, vitamin D, calcium, omega-3 (EPA/DHA), zinc, and sometimes selenium—depending on region and food choices. Evidence quality: High (professional consensus/position statements) Limitations / nuance: “Adequate” does not mean “automatic.” Any diet can be poorly planned; vegan diets require B12
Supporting Evidence
Position statements from the Academy of Nutrition and Dietetics and British Dietetic Association affirm this.
Caveats: Requires appropriate planning, especially for B12.