 They are found in a lot of goods, including some textiles, even dental floss. There's also a class of chemicals known as endocrine disruptors found in a lot of personal care products. So we reached out to Dr. Julia Brody. She's executive director and senior scientist at the Silent Spring Institute. They research the environmental causes of breast cancer, the most common or one of the most common early onset cancers. Interestingly, there are more than 12,000 cases diagnosed each year in the United States.