In recent studies, it has been found the certain plastic
reusable bottles may be a cancer risk. The risk is due to a
chemical called BPA (Bisphenol A) that can be released when the
bottle is washed, heated, and/or re-used. This impacts adults as
well as children. Here are a very ways to limit the risk of BPA
in plastic bottles: Look for "BPA-free" claims on toys, baby
bottles and containers. A lot of companies are starting to roll
out BPA free baby bottles, bottle liners, and re-usable
containers. Avoid polycarbonate and PVC (polyvinyl chloride)
plastics, both of which contain BPA. At the bottom of the
plastic, there should be a recylcing code. Anything with code 7
is at risk. Alternatives include polyethylene plastic (also
labeled PETE) and containers marked with recycling code 1, 2
(HDPE) and 4 (LDPE). Polypropylene (recycling code 5, or PP) are
also safe. If you use hard polycarbonate plastics (Nalgene
bottles, baby bottles, sippy cups), do not heat or use them for
warm or hot liquids. This includes runnin