Protein powders are notoriously hit-or-miss when it comes to taste. But according to a new study from Consumer Reports (CR), gym bros and casual proteinmaxxers should be less concerned with how their protein powders taste, and more concerned about whether they might contain lead.

The study, published on October 14, tested 23 of the most popular protein powders and ready-to-drink shakes for heavy metal contamination.

CR purchased multiple samples of each product, including two to four distinct lots, over a three-month period beginning in November of 2024. The samples were then tested for protein, arsenic, cadmium, lead, and other elements.

The results were striking: More than two-thirds of the products analyzed contained more lead in a single serving than the amount that CR’s food safety

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