Food products purchased from health food stores often contain heavy metals such as lead, cadmium, and mercury.
"It's like a lot of lead, cadmium, um there's mercury... And that people are buying in these health food stores, exactly right, they're not right what they say they are." (said at 1:03:47)
Multiple chemical analytical studies of products and supplements purchased from health stores confirm frequent contamination with heavy metals, including lead, cadmium, and mercury. Testing of medicinal plant and microalgae dietary supplements detected heavy metals in 79.2% of terrestrial plant products and 88.2% of microalgae products, with lead and cadmium found in 68.3% and mercury in 29.3% of tested items. Similarly, analyses of adaptogenic herbal supplements revealed widespread lead contamination exceeding regulatory safety limits by up to 235%, and evaluations of dietary supplements purchased from health stores in Mexico confirmed detectable levels of lead, cadmium, and mercury.
- supports: Content and daily intake of copper, zinc, lead, cadmium, and mercury from dietary suppleme… (Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association 2007)
"This study investigates the presence of Cu, Zn, Cd, Pb, and Hg in 24 dietary supplements purchased in different health stores across the city of Hermosillo, located in the northwest of Mexico." (abstract, introduction, passage verified)
pubmedfull study (doi) - supports: Health risks from consumption of medicinal plant dietary supplements. (Food science & nutrition 2020)
"The presence of at least one of the three analyzed heavy metals was found in 79.2% samples of supplements produced from terrestrial plants and in 88.2% supplement samples produced from microalgae." (abstract, results, passage verified)
pubmedfull study (doi) - supports: Heavy Metal Contamination in Adaptogenic Herbal Dietary Supplements: Experimental, Assessm… (Biology 2025)
"Results demonstrated widespread contamination, primarily with Pb and Ni. In processed forms (tablets and dried fruits), Pb concentrations exceeded permissible limits by up to 235%, while Ni levels were exceeded by up to 321%." (abstract, results, passage verified)
pubmedfull study (doi)