This superfood may be a little foreign, but it’s worth getting familiar with. Spirulina is a type of green-blue algae that’s rich in, well, almost everything: protein, omega-3s, B vitamins, zinc, iron, beta carotene—the list goes on.
“It remains a controversial green because of its toxin-containing microcystins, which can absorb heavy metals from the water it is grown in,” Zuckerbrot cautions. “However, not to worry so long as you buy your spirulina from a trusted brand.”
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