. ♪ ♪ >> write to us at ♪ >> write to us at info@teenkidsnews.com. -- captions by vitac -- www.vitac.com] strieker: rupal pujaara's daughter only drinks out of baby bottles free of the chemical bisphenol "a." also known as bpa. - when i heard about the endocrine system and the nervous system and the brain development, that was--that was really concerning to me. strieker: the same goes for the sippy cups heidi parsont buys. - they're about $9 or $10 a bottle, which seems like an exorbitant sum. on the other hand, it's not an exorbitant sum if they're not ingesting any more chemicals. strieker: the centers for disease control says 93% have bpa in our bodies. from the linings of food and soda cans to eyeglasses, water bottles, and dental sealants, billions of pounds of this petroleum-based chemical are used to strengthen plastics. bpa mimics and can interfere with the hormone estrogen. studies show even small amounts can alter reproductive, neurological, and immune systems. - bisphenol "a," that research was showing more and more could lead to diabetes, obesity, early puberty, cancer, a who