The controversial chemical Bisphenol A (BPA), a compound used in hard, clear polycarbonate plastics, is getting scrutiny again.

The U.S. government's National Toxicology Program and a scientific panel expressed concerns about physiological changes that occur in people when they ingest BPA that has leached from plastics into their food. The Canadian government is very close to declaring the chemical toxic, the New York Times reported.

These findings could contribute to banning the chemical from plastic baby bottles, water bottles, and food containers but it will certainly make some people think about buying foods and beverages in BPA-free containers.

BPA has raised concerns because it appeared to mimic the effects of estrogen and mess with hormonal levels and cell signaling systems. Previous studies have linked the exposure to this chemical and a greater risk of developing uterine fibroids, breast cancer, decreased sperm counts, and prostate cancer. Babies and children were found to be the most affected by the exposure.

Scientific evidence revealed a need for greater concern for possible effects of bisphenol A on prostate gland, mammary gland and early onset of puberty in exposed fetuses, infants and children.

After these news, the sales of BPA-free baby bottles have tripled overnight. President of BornFree, manufacturer of the BPA-free bottles, reported shipping an additional 300,000 bottles to Canada this week to meet an increased demand.

Besides buying BPA-free baby bottles, other ways to lower exposure to BPA is to avoid heating foods and liquids in plastic containers that contain this compound. Consumers should learn more on minimizing their and their family's exposure to BPA, researchers advise.