Nattokinase

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.

Nattokinase comes from just one common food — natto. Here's why tofu, tempeh, and miso don't count, plus how food compares to a supplement.

What does nattokinase do to the brain? The honest, evidence-based answer—its effects are indirect and vascular, and here's what the research really shows.

K2 and nattokinase both come from natto but are completely different—one is a fat-soluble vitamin, the other a clot-dissolving enzyme. Here is how each works and what to take.