It’ll take some time to fully dissect the findings. Obviously, nobody needs to ingest unsafe levels of heavy metals. But 12 of the 15 did not contain unacceptable levels of any heavy metals in a full three (3) servings daily. Of the 3 that did show unacceptable levels, again, it was only at 3 servings daily, not one or 2. Only one product had levels of arsenic above the proposed USP limit. Further, the USP limits are based on a person weighing only 110 pounds — considerably less than many if not most protein shake drinkers.
The Natural Products Association, a dietary supplement industry trade group, has issued a response observing that the levels found were all below the FDA’s own standards for what is tolerable, and that the levels were far below what is found in many foods!