You can never have too much of a good thing, the saying goes. For months now, Americans treated protein that way. What started as a fringe supplement used mostly by "gym bros and fitness-obsessed teens," as Consumer Reports journalist Paris Martineau put it, has transformed into a full-blown mass-market wellness movement. There's protein pastas, protein cereals, protein sodas, and even Starbucks protein cold foam.
"Heavy metals like lead, mercury, and arsenic enter your body through various environmental sources and cause numerous health issues, including gastrointestinal problems and neurological symptoms."