A recent Consumer Reports investigation has revealed alarming levels of lead contamination in several popular protein powders and shakes — supplements that have surged in popularity among fitness enthusiasts and health-conscious consumers.
According to the report, most products tested contained more lead per serving than what experts consider safe to ingest in an entire day. The worst offender, Naked Nutrition’s vegan mass gainer, was found to have 7.7 micrograms of lead per serving, nearly 16 times the daily “level of concern” for the toxic metal. Only one out of the 23 tested products — MuscleTech 100% Mass Gainer — showed no detectable lead.
Health experts emphasize that no amount of lead exposure is considered safe, as the metal accumulates in the body over time, posing long-term health risks. The concern grows when protein powders and shakes — often consumed daily — become a consistent source of exposure.
The investigation also highlights the broader “protein-maxxing” trend, where protein isolates are being added to everyday foods like bread, cereal, pasta, popcorn, and even beverages. Many Americans now incorporate protein shakes into their daily diet, often believing it aids in muscle building or weight loss.
Ironically, most adults already consume far more protein than needed — with men averaging 155% and women 135% of the USDA’s recommended dietary intake. This excessive consumption, coupled with potential heavy metal contamination, raises serious concerns about the safety of daily protein supplement use.