BPA stands for Bisphenol-A, an estrogen-imitating chemical used to produce reusable plastic products, such as baby bottles, toddler sippy cups and plastics you might use for storing leftover food. These types of chemicals have reportedly had health effects on humans, specifically in the fetal and infant states.

How to identify BPA products

You’ll find that plastics that contain BPA have recycle codes on their bottoms with the number 3 or the number 7. “Plastics labeled ‘1,’ ‘2,’ ‘4’ and ‘5’ are the safest,” says Dr. Christian. “However, avoid reusing plastics labeled ‘1’ and ‘2,’ and do not use them with warm or hot liquids.” Also, avoid drinking beverages or eating foods stored in plastic containers if you’re pregnant or nursing because you could pass those chemicals to your baby.