>1.3. Veganism is unsustainable A vegan diet is not sustainable for the average person. Ex-vegans vastly outnumber current vegans, of which the majority[1] have only been vegan for a short time. Common reasons[2] for quitting are: concerns about health (23%), cravings (37%), social problems (63%), not seeing veganism as part of their identity (58%). 29% had health problems[3] such as nutrient deficiencies, depression or thyroid issues, of which 82% improved after reintroducing meat. There are likely more people that quit veganism with health problems than there are vegans. Note that this is a major limitation of cohort studies on vegans as they only analyze the people who did not quit. (survivorship bias)
>FOOTNOTES[1]
https://i.imgur.com/AQZQbIC.jpg[2]
https://faunalytics.org/wp-content/uploads/2014/12/HRC-Study-of-Current-Former-Vegetarians-Vegans-Dec-2014-Tables-Methodology-1.pdf#page=10[3]
https://faunalytics.org/wp-content/uploads/2015/06/Faunalytics_Current-Former-Vegetarians_Full-Report.pdf#page=7 