Nattokinase
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Does Natto Help With Sleep?
Does natto help with sleep? A research-based review of what the fermented Japanese superfood does — and doesn't do — for your sleep quality.
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What Is Natto?
Natto is Japan's most overlooked superfood — and the only source of nattokinase. Learn what it is, what's in it, and how it compares to a supplement.
