Nutrisystem Warning

Nutrisystem also supplies its members with a member website. I'm happy and so is my doctor who was telling me I needed to lose weight. Best of luck — Norm. Nutritionists praise the portion-control points system: Some plans, including cleanses, ask followers to adhere to extremely strict calorie allotments.

Popular on CBS News

Woman Smiling and Holding a Supplement I managed to find several research studies on Garcinia Cambogia, in both animals and humans. According to some studies in rats, it can inhibit a fat producing enzyme called Citrate Lyase, making it more difficult for the body to produce fat out of carbohydrates (1). Other rat studies show increased levels of the neurotransmitter serotonin. This could theoretically lead to reduced appetite and cravings (2).

There are actually a whole bunch of studies in rats showing that Garcinia Cambogia consistently leads to significant weight loss (3, 4, 5, 6).