A chemical found in some plastics, called bisphenol A (or BPA) does leak out into drinks and food. The good news is BPA isn't found in most disposable bottles. It's found in rigid, nondisposable containers, such as office watercoolers, jugs or sports bottles. You'll find many of these bottles will have the number 7 on the bottom of the container, so do a quick number check.
Keep in mind that canned goods also have inner linings that contain BPA, so cut back if possible, but keep things in perspective. You should worry more about smoking or not exercising!
