Controversial Diet

A new, controversial diet trend uses the pregnancy hormone hCG, or human chorionic gonadotropin, injections to suppress the appetite. The injections claim to regulate the hypothalamus and reset the metabolism, and promises to help dieters lose up to a pound or more a day . One hCG diet combines the injections with a calorie intake of just 500 to 800 a day, while restricting exercise.

Endocrinologists Dr. Kent Holtorf and Dr. Katja Von Herle, and celebrity nutritionist and homeopathy expert Samantha F. Grant join The Doctors to debate the safety and efficacy of the diet.

"I will give my opinion on this here and now," OB-GYN Dr. Lisa Masterson says. "The hCG diet needs a lot more testing before anyone should be on it, because it has the potential to cause cancers and things like that. HCG's a real hormone that does a lot of things, effects a lot of systems in a woman's body, as well as a man's, and you really need to have it studied long-term before you just try and use it as a diet medication."