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FactuallyVegan
Myth Debunked
NutritionMisleading

The Myth

If vegans need supplements like B12, it proves the diet is unnatural and inadequate

Supplements prove veganism is unnatural

Last reviewed: January 10, 2026

Quick Answer

B12 comes from bacteria, not animals. Livestock are supplemented with B12 or cobalt. Taking supplements directly is simply more efficient than filtering them through animals. Many omnivores also need supplements.

Evidence Summary

The claim: "Needing supplements proves veganism is unnatural/deficient." Why this argument fails: 1. Livestock are supplemented too:

  • Factory-farmed animals receive B12 supplements or cobalt (to produce B12)
  • Most animal B12 comes from supplementation, not "natural" processes
  • Eating meat = taking supplements with extra steps 2. B12 comes from bacteria, not animals:
  • B12 is synthesized by bacteria
  • Historically found in soil, water, fermented foods
  • Modern sanitation
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