Is a vegan diet healthy?
Created on: 01.09.2025
Last edited on: 17.12.2025
A well-planned vegan diet can be healthy and nutritionally complete if vitamin B12 is reliably supplemented. Depending on individual circumstances, supplementing other nutrients may also be advisable. ➡️ You can find comprehensive information on supplementation in the Nutrient Guide.
Veganism is defined as a moral lifestyle that seeks to avoid, as far as practically possible, the exploitation of animals for our food, clothing, entertainment, cosmetics, etc. By definition, veganism can therefore be neither healthy nor unhealthy, as it is fundamentally an attitude and not a diet.
We have lovingly compiled an overview of the current state of research for you here.
This analysis provides an evidence-based classification of the widespread claim "veganism is unhealthy", consistently distinguishing between ideological attributions and nutritional science evaluation. Based on large prospective cohorts, substitution analyses, and current position papers, it shows under which conditions a plant-based diet is health-promoting, neutral, or potentially risky.
Insight: What matters is not the label of a diet, but its quality, planning, and a realistic comparison with alternatives ✅
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