Natto is fermented and isn't alleged to bring about any estrogen troubles or phytic acid challenges due to the fermentation. No matter, the vitamin K in butter is usually K1 whose origin is grass and MK-4 whose origin is conversion of K1 to MK-four through the cow, not fermentation. A https://k2spiceforsale78899.blog4youth.com/31116941/k2-powder-an-overview