According to doctors and food-safety specialists, plastic bowls that are scratched, cloudy, cracked, warped, or discolored are the biggest concern. Over time, these imperfections allow bacteria to hide and multiply, even after washing. More alarming, heat from microwaves, dishwashers, or hot foods can cause older plastics to leach chemicals into food, especially if the bowl was never designed to withstand high temperatures. This risk increases dramatically with repeated use.

Experts are particularly concerned about bowls made from older or low-quality plastics, especially those not labeled as microwave-safe or food-safe. Some plastics may release substances that disrupt hormones or irritate the digestive system when exposed to heat, oils, or acidic foods. Doctors note that children, pregnant women, and people with weakened immune systems are especially vulnerable to these effects, making it critical to audit kitchen items regularly.

Health professionals recommend replacing worn plastic bowls with safer alternatives such as glass, stainless steel, or high-quality BPA-free containers designed for food storage and heating. If a plastic bowl shows any signs of wear, smells even after washing, or changes shape when heated, experts say it’s already past its safe lifespan. The takeaway is simple but urgent: if you’re unsure about a plastic bowl, don’t risk it—throw it out. Your health may depend on it.