I’ve read that about [84% of people who start plant-based diets give up](https://www.psychologytoday.com/us/blog/animals-and-us/201412/84-vegetarians-and-vegans-return-meat-why) and [go back to eating meat](https://www.psychologytoday.com/us/blog/animals-and-us/201106/why-do-most-vegetarians-go-back-eating-meat), and the most common reason is that they feel terrible, i.e. poor health.
Most of the advice that I see on-line about how to overcome feeling bad on a WFPB diet assumes a single cause for all such problems (“not enough calories!”) and a single solution for all (“eat more!”). (Or “It’s the Pleasure Trap!” even if the person experiences no lack of pleasure in eating whole plant foods.) A happy exception appears at [the last question in this lecture](https://youtu.be/h3Y8VjiTto8?t=6781), in which Joel Fuhrman briefly mentions three reasons why people feel bad when starting WFPB: detox of accumulated nitrogenous waste; deficiency of DHA; some people require more protein.
Is there an article, book, or credible web page that collects and explains the various reasons why different people feel terrible on a WFPB diet and how to overcome them? I figure that doctors and nutritionists who have been helping people go WFPB for many years now must have seen all the ways that things go wrong. Someone must have collected this knowledge someplace by now.
Dining and Cooking