Apparently, the National Toxicology Program has just reviewed the data on bisphenol A, the chemical that leaches from hard plastic water bottles. The NTP says it is a little - not a lot - worried about it on the basis of limited and inconclusive studies. This finding, of course, contradicts the FDA’s more optimistic assessment. According to theWashington Post, a recent study done at Yale finds the chemical to cause problems in the brains of monkeys. The chemical industry says bisphenol A is harmless. Consumer Reports (October 2008, p. 15) says its “tests of a limited number of baby bottles detected only trace amounts of BPA that are below levels likely to post a risk for infants.” But then it recommends baby bottles made BPA-free plastic. This confusing situation elicited a New York Times editoria l urging caution: “When in doubt, especially when it comes to children, err on the side of caution. I agree. While the scientists are fighting this one out, why not take the prudent course and practice avoidance.