hi btp, I also am interested in vit K2. I heard it could be lacking in people with psoriasis. ............. K2 is 2 to 3 times more efficacious than k1, is part of a group called menaquinones (got that from Dr A Weil's site!) and food sources include beef liver and pork liver, egg yolks, fermented dairy (cheese) and fermented soy like miso and natto. .............. I don't know much about it though, dosage and all that, if you learn anything about it let us know.
If you are brave enough to consume natto on a daily basis.........
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Medical benefits.
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Nattō contains large amounts of vitamin K, which is involved in the formation of calcium-binding groups in proteins, assisting the formation of bone and preventing osteoporosis. Vitamin K1 is found naturally in seaweed, liver, and some vegetables, while vitamin K2 is found in fermented food products such as cheese and miso. Nattō has very large amounts of vitamin K2, approximately 870 micrograms per 100 grams of nattō.
According to a study, fermented soybeans, such as nattō, contain vitamin PQQ, which is very important for the skin.[6] PQQ in human tissues is derived mainly from diet.
According to recent studies,
polyamine suppresses excessive immune reactions, and nattō has a much larger amount of it than any other food.[7] Dietary supplements containing the substances extracted from natto such as polyamine, nattokinase, FAS and vitamin K2 are available.
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Yes, for the sake of a full spectrum of polyamine, nattokinase, FAS and vitamin K2...........
If you are brave enough......with its powerful stinky smell and sticky, stringly, slimmy consistency........
By the way, the Japanese don't "eat" such rotten slim for no reason, right?
Urggggggg.........
PS
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Recommended amounts
The U.S. Dietary Reference Intake (DRI) for an Adequate Intake (AI) of vitamin K for a 25-year old male is 120 micrograms/day. The Adequate Intake (AI) for adult women is 90 micrograms/day, for infants is 10–20 micrograms/day, for children and adolescents 15–100 micrograms/day. In 2002 it was found that to get maximum carboxylation of osteocalcin, one may have to take up to 1000 μg of vitamin K1.