India, Aug. 4 -- You probably do not think twice before pouring hot tea into a takeaway cup, reheating leftovers in a plastic container or grabbing a bottle of water before heading out. Plastic has quietly become part of almost every corner of our homes. The problem is not the plastic you can see. It is the tiny particles that break away over time.

Known as microplastics and nanoplastics, these particles have become a growing topic of medical research. Scientists have already found them in human blood, lungs, breast milk, the placenta and several other organs. While researchers are still studying their long-term impact on health, many doctors agree that cutting down unnecessary exposure is a sensible step. The good news is that you do no...