That viral study about microwaving plastic is missing a key detail

I talked to a materials science grad student at a bar in Portland who said those tests use way higher temps than any home microwave hits, so the results don't really apply to us. Has anyone here actually seen a peer-reviewed version that confirms the panic?

3 comments

3 Comments

ruby6594d ago

Actually I've looked into this pretty deeply (because I got worried about my meal prep containers) and the issue is more about repeated heating and wear than a single microwave session. Those lab studies blast plastic with extreme heat to simulate years of use in minutes, but even a year of normal microwaving can cause microcracks that shed particles. I found a 2023 review in Environmental Science & Technology that showed lower heat still released measurable amounts, just less dramatically. So I get the skepticism about the viral study but I think dismissing it entirely misses the point that plastic degradation happens on a spectrum, not just at high temps.

tessap734d ago

Right, have you ever noticed how the plastic lids on those deli containers get that weird cloudy look after a few months? That's the microcracks ruby is talking about, I swear. I started switching to glass for anything I'm gonna nuke more than once a week, just seems like common sense honestly. My old meal prep routine was all plastic for years and the lids would literally start splitting along the edges, can't be good.

scott.olivia4d ago

Actually the 2023 review ruby mentioned is a good example, but @tessap73 I gotta push back on the cloudy lids thing a little. That cloudiness is usually from heat stress causing the plastic to crystallize, not just microcracks. It's still a sign the material is breaking down though, so your switch to glass makes total sense. The real issue is people don't realize microwaving plastic more than a handful of times changes its structure even if it looks fine.