Filled with carcinogenic chemicals like formaldehyde, chemical hair straighteners can more than double your risk of some cancers. Even if you avoid the products, you may want to take further precautions.

Endocrine disrupting chemicals interfere with many basic body functions and have been linked to multiple types of cancer as well as other health problems. They are present in plastics, personal products, textiles, and even drinking water, but there are ways to reduce your exposure.