Are sports protein supplements safe for regular consumption given the risk of heavy metal contamination?

What's actually in it

That tub of protein powder on your counter is more than just whey or plant protein. Peer-reviewed testing has found unwanted extras hiding inside. Recent peer-reviewed research shows that these powders can be contaminated with heavy metals and microplastics. These materials end up in your body every time you mix a shake.

What the research says

A 2026 study in Environ Res performed an integrated health risk model on sports protein supplements. The researchers found that regular consumption leads to exposure to both heavy metals and microplastics. This study highlights that these contaminants are not rare accidents: they are part of the product profile for many commercial supplements.

While other food items like chocolate bars and spices have also been studied for metal content, protein supplements present a unique risk because they are consumed in large, daily doses. When you rely on these supplements for your daily nutrition, you are increasing your cumulative intake of these harmful substances.