Washington: A chemical in some plastic food and drink packaging including baby bottles may be tied to early puberty and prostate and breast cancer, US said on Tuesday. Based on draft findings by the National Toxicology Program, part of the US National Institutes of Health, senior congressional Democrats asked the Food and Drug Administration (FDA) to reconsider its view that the chemical bisphenol A is safe in products for use by infants and children. The chemical, also called BPA, is used in many baby bottles and the plastic lining of cans of infant formula. The National Toxicology Program went further than previous US statements on possible health risks from BPA. It said: "There is some concern for neural and behavioral effects in fetuses, infants and children at current human exposures.' The findings expressed concern about exposure in these populations, "based on effects in the prostate gland, mammary gland, and an earlier age for puberty in females.' Republican John Dingell, a Michigan Democrat and chairman of the House of Representatives Energy and Commerce Committee, said the draft cast doubt on the FDA's position that BPA was safe. "I hope the FDA is willing to reconsider their position on BPA for the safety of our infants and children,' he said. The National Toxicology Program said laboratory rodents exposed to BPA levels similar to human exposures developed precancerous lesions in the prostate and mammary glands, among other things. Bisphenol A is used in the production of polycarbonate plastics and epoxy resins and can be found in food and drink packaging as well as compact discs and some medical devices. The National Toxicology Program expressed "negligible concern' that exposure of pregnant women to BPA causes fetal or neonatal death, birth defects or reduced birth weight and growth in babies. REUTERS Canada plans to label it toxic The Canadian government is said to be ready to declare as toxic bisphenol A, or BPA, a chemical widely used in plastics for baby bottles, beverage and food containers as well as linings in food cans. Canada would be the first country to make a health finding against BPA, which has been shown to disrupt the hormonal systems of animals. NYT NEWS SERVICE