Protein powders are a quick, easily digestible, immediate source of protein and other nutrients. These powders and pre-made drinks are often a staple in the diet of bodybuilders, athletes and gym goers. However, the July 2010 issue of Consumer Reports revealed unsafe levels of arsenic, cadmium, lead and mercury in several popular brands of protein powder. Scientists and protein powder manufacturers continue to debate on whether or not these amounts are harmful to users.
Heavy Metals in Protein Powder
Using an independent laboratory, Consumer Reports tested 15 popular protein powders for traces of heavy metal. Brands tested included Myoplex, Muscle Milk, BSN, Optimum Nutrition, GNC brand protein powder and several others. The study used the following United States Pharmacopeia standard for safe levels of these elements:
- arsenic - 15 micrograms (µg) per day
- cadmium - 5 micrograms (µg) per day
- lead - 10 micrograms (µg) per day
- mercury - 15 micrograms (µg) per day
According to the Consumer Reports study, all 15 brands of protein powder showed traces of some or all of the elements within safe levels. However, Myoplex and Muscle Milk showed higher than recommended levels of arsenic, cadmium and lead, thus sparking controversy on the safety of their consumption.
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