Eating food out of a plastic container isn't going to increase your microplastics intake (by enough to matter). Those kinds of plastics are too stable to be a

Eating food out of a plastic container isn't going to increase your microplastics intake (by enough to matter). Those kinds of plastics are too stable to be a problem in that regards. Even if you left your food in them in the fridge for days. The microplastics problem is a pollution problem. When you're done with any given plastic thing you throw it out. Some tiny percentage gets recycled, sure but for the most part nearly all plastics get trashed. The trashed plastic breaks down into microplastics slowly over time and those microplastics are very mobile and easily wash or blow away if they're exposed to sun. This means they end up in rivers, lakes, streams, and large bodies of water (e.g. the ocean). From there they diffuse and get inadvertently eaten by sea creatures which are then eaten by larger sea creatures and ultimately end up concentrating inside the larger species that we eat. It's not just the fish though; it ends up in our water supplies which are used to wash our other foods and ourselves. Basically, microplastics are currently so pervasive in our water supplies that every product made for human consumption that exists has microplastics in it. The solution isn't to do away with plastics entirely it's to use different kinds of plastics that don't become long-lived microplastics. For example, polylactic acid (PLA). It's not suitable for all purposes but it's perfectly fine for something like a frozen food container or even the thin plastic film that seals it up. The only reason we're not using such plastics (in the places where they can be used) is they're not as cheap as the bad stuff. We need regulations that require single-use products use plastics that don't break down into long-lived microplastics.