Nattokinase

Dizzy after natto? The timing tells you the cause — from delayed allergy to a blood pressure drop. Here is the evidence-based differential.

Dizzy after eating natto? Four causes explain it — a blood pressure dip, a delayed soy allergy, fermentation amines, or medication. Know which needs a doctor.

Does natto help with sleep? A research-based review of what the fermented Japanese superfood does — and doesn't do — for your sleep quality. 

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.