A recent Consumer Reports investigation involving 23 protein powders and ready-to-drink shakes found that more than two-thirds of the tested products contained unsafe lead levels in a single serving, according to the brand's own food safety experts. Some powders even had more than 10 times the amount of lead considered safe for daily intake by these same experts.

Another report conducted from 2024 to 2025 by the nonprofit organization Clean Project Label determined that out of 160 protein powders that were tested, 7% exceeded California Proposition 65 safety thresholds for toxic metals. When compared to whey-based protein powders , plant-based powders had three times the amount of lead, and chocolate powders had four times more lead than vanilla. Even more surprising

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