Is Your Shampoo Making You Fat?

You don't have to be a doctor to know that cheeseburgers and channel surfing can contribute to weight gain. But according to new research, your beauty products (like shampoo) could be contributing as well.

The research out of Mount Sinai Medical Center in New York, found that phthalates, which are ingredients in about 70 percent of shampoos, soaps and cosmetics, should be avoided when possible. Why? Phthalates could be endocrine disruptors, which mimic the effects of hormones and affect the performance of the glands that produce them.

This is not the first study that shows chemicals' effect on the system that naturally controls body weight. And phthalates aren't the only chemical to be cautious of. Bisphenol-A, usually present in plastic containers, is another substance to watch out for.

However, while endocrine disruptors may be playing a significant role in obesity, at this point, more research is necessary to fully determine the effect of chemicals on body weight. In the meantime, the doctors behind the study recommend choosing organic and fragrance-free products.