After reading much from some scientific and not so scientific materials, I learned that BPA also known as Bisphenol A is a dangerous chemical compound. Researchers found that it has negative effects to humans, specially to babies after prolonged exposure; Thus, a law has been passed banning it's use in baby bottles and other baby products.
After such concern has been raised manufacturers stopped the use of bisphenol A in all types of plastic baby bottles and recalled released products. Now, BPA-Free Products are available in the market. They are easily identifiable by their tags or labels that says "BPA-Free." Mothers can breathe calmly knowing that their baby is sucking on a harmful chemical free bottle. Here are some of the manufacturers that manufacture BPA-free bottles are:
1. BornFree
Just like any informed mother, I always check first for the "BPA-Free" label before buying. For my baby I choose Philips AVENT BPA Free Classic Infant Starter.
References: wikipedia.com