Don't drink out of #7 plastic to avoid BPA. Even the smallest amount of BPA has been linked to infertility, birth defects and other reproductive issues when tested on lab mice. BPA has also been linked to asthma and other illnesses and diseases in humans.
Plastic: It’s made from nonrenewable resources and isn’t biodegradable, making it a serious threat to the environment. And it can contain substances like PVC and BPA, which have nasty consequences for your health. Yet for cost and convenience, sometimes it’s a necessary evil. The good news is that not all plastics are created equal, and some are more eco-friendly than others.