Not just for number seven plastic. But for many others. It is safest and best to use glass baby bottles. BPA is in large amount in plastic labelled number seven but, there are other chemicals this doctor talks about that are in other plastic. SAFEST does not mean SAFE. It’s merely, the safer of the choices. Many people do not realize that baby food jars are made in such a fashion that you can screw a baby bottle lid and nipple onto them. While breast feeding is the best, it is not for every mother. However, you CAN choose glass over plastic to protect your child and give him/ her the best chance for good growth and development. If you are about to have a baby, and are in the hospital and not breast feeding, ask the nurse for the bottles. They do not reuse them. They throw them away.