Reading this guy's blog reminded me very much of personal experiences of people suffering a significantly damaging eating disorder (ED) such as anorexia - ED s

Reading this guy's blog reminded me very much of personal experiences of people suffering a significantly damaging eating disorder (ED) such as anorexia - ED sufferers also report euphoria, and a keen focus on key metrics such as weight loss and exercise allows them to ignore negative health effects. I would suggest this guy's experience is textbook typical of very low calorie diets (VLCD). That doesn't mean it will be healthy in the long-term - according to wikipedia, he might expect gallstones.