A new report from Consumer Reports has found concerning levels of lead in popular protein powders and shakes, raising questions about the safety of supplements in the $28 billion global industry.

Consumer Reports tested 23 protein products and discovered that more than two-thirds contained more lead in a single serving than their experts consider safe to consume in a day. Some products had more than 10 times that level.

"The problem has gotten worse," Sana Mujahid of Consumer Reports told CBS News.

Plant-based supplements contained on average nine times more lead than dairy-based ones, likely because plants absorb the metal from soil.

Consumer Reports specifically advised against consuming two products due to their high lead content: Naked Nutrition's Vegan Mass Gainer Powder and Huel'

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