South Beach, Atkins, Paleo, Keto, that weird maple syrup, lemon and cayenne pepper drink diet all seem to make their rounds. The University of Pittsburgh Medical Center defines a fad diet as:
“A fad diet is a diet that promises quick weight loss through what is usually an unhealthy and unbalanced diet.
Fad diets are targeted at people who want to lose weight quickly without exercise.
Some fad diets claim that they make you lose fat, but it’s really water weight you’re losing.
Fad diets that are restricted to certain foods may work, but most are boring or unappealing. This can make them difficult to follow on a long-term basis. And some fad diets can actually be harmful to your health.”