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.

Eating natto every day delivers nattokinase, vitamin K2, and plant protein — with real benefits and a key warfarin warning. Here's the evidence.

Which foods have nattokinase naturally? Really just one — natto. Here's how much it delivers, why tempeh and miso don't count, and the vitamin K2 catch.

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