Over on this post about antivegan Paula Deen, commenter What Now? directs our attention to "The Evidence for a Vegan Diet" in the Atlantic, in which the author seeks to:

...offer a personal counter-narrative to the increasingly popular and decidedly dour "I'm a recovering vegan" storyline. Perhaps inspired by Lierre Kieth's The Vegetarian Myth, a book that chronicles the author's losing battle with a plant-based diet, bloggers have clogged foodie networks with angst-ridden accounts of fatigue, sickness, hair loss, anxiety, diminished sex drive, and mental breakdown after quitting animal products. The problem with these accounts, as far as I can tell, is that those who made the vegan leap (and I praise them for doing it) did so without doing due diligence on the details of intelligent veganism. Someone can live on potato chips, pot, and cherry soda and call himself a vegan. Many recidivists have evidently tried to do just that.

What Now adds: "I also admired vegans for a long time. Five years ago I tried a one-month vegan challenge. I've never looked back :D."