 Carotid arteries, by the way, are those big ones in your neck that carry blood to your brain. Plastics in general, obviously next to impossible to avoid nowadays. But there are a few things you can do to cut down on your exposure. Use reusable bags when you shop. Use stainless steel and glass containers whenever you can. And here's a big one. Don't microwave food or drinks in plastic when you can avoid it. I'm Dr. Sanjay Gupta, helping you live a better life.