Also leave us a Mega Keto comment on what you think. Fad dieting has become so entrenched in US culture that it is seen by many as a normal part of daily life. It has become almost chic to be on the latest fad diet. Fad dieting has become so common place that it has actually created its own $61 billion industry. But is Yo-Yo or fad dieting really safe or is it a sign of a more serious issue? When we hear the word eating disorder, we immediately think of anorexia and bulimia. But did you know that perpetual xs keto dieting can be considered an eating disorder?