I share this pet peeve. Several weeks ago while traveling, I was leaving a restaurant after breakfast, rushing to a meeting. I hadn't finished my tea, and was hoping to take it with me. The host said, no problem, and before I could say anything, poured the hot tea into a plastic cup.
I thanked him, and grabbed the cup, and yet I knew that now the cup and tea were going to be wasted. Drinking out of plastic is a health compromise I hate to make - especially hot drinks in plastic.
I admit, there are still a few plastic tupperware in my home and we are still looking for an alternative to our Brita filter, but I have gradually replaced the vast majority of plastic-ware around the house, and try to never eat or drink out of heated plastic in particular.
Components in plastic containers can leach into food and drink, and that leaching process is accelerated when the plastic is heated. These leaching components are plasticizers, additives to plastic that help plastic things retain their shape. Two common plasticizers are endocrine disrupters - bisphenols and phthalates1 - a word whose spelling continues to baffle me.
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Plasticizers leach into food, but this leaching process is accelerated when plastic is heated. In addition, containers that have been microwaved many times or are old, scratched, or cracked may leach more3.