Vegan Food Consumption
Vegan Food Consumption Surveys
There are several scientific surveys studying food consumption of vegans. Two of them stand out for their relevance and methodology:
- The EPIC-Oxford survey : following the daily diets of 65 500 adult persons (including 18,900 vegans) over 2 years (Key & Al – 2006, Health Effect of Vegetarian and Vegan Diets)
- The Peter Clarys et. al. (Free University of Brussels and EVA – Ethical Vegetarian Alternative) in 2012 with a panel of 1,475 people (Vegans and Omnivorous)
Oxford Epic : daily consumption per type (abstract)

University Bruxelles Daily Consumption

Based upon these two scientific surveys, it was observed for the vegan consumers (vs the omnivore consumers)
- A higher HEI – Healthy Eating Index- (explanation: https://www.cnpp.usda.gov/healthyeatingindex
- A higher fiber consumption
- A lower Protein intake. Averaging sufficient amount to cover the basic adult requirement. However, approximately 1/3 of the vegan consumers had a lower intake than the recommendation. This proportion may be higher for seniors and people with certain health conditions.
- A significant deficit in Vitamin B12
- Average intakes of Calcium lower than the nearly 1 gram/day (European) recommended daily amount.
- The Iron paradox : Vegans have higher intakes of iron than omnivores. However, due to the low absorption of iron (only 10% of intake on average), this level is not an indicator of satisfactory iron levels in the body.
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