https://www.consumerreports.org/lead/protein-powders-and-sha...

Yet for all the industry’s growth and rebranding, one thing hasn’t changed: Protein powders still carry troubling levels of toxic heavy metals, according to a new Consumer Reports investigation. Our latest tests of 23 protein powders and ready-to-drink shakes from popular brands found that heavy metal contamination has become even more common among protein products, raising concerns that the risks are growing right alongside the industry itself.