It's not just microwaving plastic. Microwaving plastic is particularly bad but people need to understand that this stuff is all over our food chain, not just the packaging either. Wild Salmon, Organic Chicken, and other foods are now showing up because the micro-plastic is in the food chain.

To those saying that the effects of plastic are unknown... False. Do some basic searching for medical studies on this and there are tons papers on the impacts to biology, immunology, endocrine system, reproductive systems, etc.