If I am not mistaken, Dr Fung addressed this somewhat. He said that ED’s like anorexia are mental disorders. It is more than likely that if fasting becomes a tool for an ED, it is most likely because you already had some psychological issue with food and fasting just becomes your latest tool to feed the disease. I think he also states that if your body fat is not high enough to sustain a healthy fast, then you should stay away from fasting. Also people with known eating disorders should stay away from fasting. If you fit in those categories, I think that is unhealthy. Also, as previously mentioned, if you look at food as the enemy instead of fantasizing about how much bacon you are going to eat once your fast is over…that may be a problem.
I hate fasting. I hate it, I hate it. But it has become my number 1 tool for losing weight and I CANNOT deny the autophagy and insulin reduction going on. I have no concern of it becoming an eating disorder because I hate it. And did I mention I hate it.
But I want to stress that, IMO, I had a eating disorder in reverse. Over consumption/ addiction to carby, sugary foods led me to be almost 300 pounds. That too was an eating disorder. SO now that I am fasting and eating Keto, I am curing that disorder.