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Does krill contain harmful toxins and heavy metals as other marine life?

Dennis A. Goodman, MD
Cardiology (Cardiovascular Disease)
Because they are at the base of the food chain, krill do not accumulate as many potentially harmful toxins and heavy metals as other marine life higher in the food chain. Krill feed primarily on plankton—microscopic algae made up of tiny plants (phytoplankton) and animals (zooplankton)—which, is the first link in the food chain. Phytoplankton is rich in EPA and DHA, and also amino acids, B vitamins, vitamin A, and a host of minerals, including zinc, magnesium, and calcium. The species of krill used for dietary supplements is called Euphausia superba, which are typically harvested from uncontaminated deep sea waters of the Antarctic Ocean.

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