Chemicals in packaging, carpets and non-stick pans 'may contribute to obesity'

Studies have also linked compounds called perfluoroalkyl substances to cancer, high cholesterol and immune problems

Chemicals used to make non-stick pots and pans, stain-resistant carpets, and food packaging may contribute to high levels of obesity by disrupting the body's ability to burn calories, scientists say.

Researchers at Harvard University examined the effects of compounds called perfluoroalkyl substances (PFASs), which have already raised concerns among some health experts after animal experiments and other studies linked them to cancer, high cholesterol and immune problems.