Popular Protein Powders and Drinks Found to Contain High Levels of Heavy Metals
A new study released today revealed that several popular protein powders and ready-to-drink protein beverages contain concerning levels of lead, cadmium, and arsenic, raising potential health risks for frequent consumers.
The report, published by Consumer Reports on October 14, 2025, assessed 23 products from leading brands, finding that 16 exceeded the organization’s recommended maximum lead level of 0.5 micrograms per day. Four products surpassed the Food and Drug Administration’s cutoff of 2.2 micrograms for the total daily amount of lead children should consume, and two contained levels approaching the FDA’s safe limit for pregnant women. Additionally, two products showed elevated cadmium levels, and one contained more arsenic than recommended.
Consumer Reports utilized a more conservative safety standard than the FDA, which allows up to 5 micrograms of lead per daily serving of a dietary supplement. The FDA also has an Interim Reference Level (IRL) of 12.5 micrograms per day for total lead exposure from all sources. The study highlighted a significant difference in contamination levels based on protein source, with plant-derived proteins containing nine times the lead found in dairy proteins like whey. This finding is particularly relevant as demand for plant-based protein options continues to grow, with the global market reaching over $32 billion from 2024 to 2025. Understanding lead exposure is crucial for maintaining public health.
Heavy metals enter the food chain through contaminated soil and water, originating from sources like volcanic rock erosion, fossil fuel combustion, and certain fertilizers. While occasional exceedances of recommended daily doses are unlikely to cause immediate harm, repeated exposure can lead to serious health issues, including neurological problems and increased cancer risk. The organization recommends consumers consider choosing dairy- or animal-based protein sources, or opting for organic plant-based options, and varying consumption to minimize potential exposure. You can learn more about Consumer Reports’ methodology and findings.
The FDA is reviewing the Consumer Reports data and will determine if further action is necessary to ensure the safety of protein products on the market.
