The Downside of Weight LossWebMD Sept. 7, 2010 -- There may actually be an unhealthy downside to losing weight.
A new study finds that blood levels of substances known as persistent organic pollutants were higher in people who had lost weight compared to people who maintained or gained weight.
Persistent organic pollutants (POPs) are compounds created by humans in industrial processes and have been linked to a wide range of illnesses, including type 2 diabetes, cancer, dementia, and heart disease. The study appears in the International Journal of Obesity.
Persistent organic pollutants are stored in fat tissues in the body. But when the amount of fat is decreased -- as through weight loss -- they may be released into the bloodstream, where they may enter vital organs, such as the heart and brain.