Vitamien K: Verskil tussen weergawes

Previous theory held that dietary deficiency is extremely rare unless the intestine (small bowel) was heavily damaged, resulting in [[malabsorption]] of the molecule. Another at-risk group for deficiency were those subject to decreased production of K₂ by normal intestinal microbiota, as seen in [[broad spectrum antibiotic]] use.<ref>{{cite web| title=Vitamin K| accessdate=26 May 2009|url= http://www.nlm.nih.gov/medlineplus/druginfo/natural/patient-vitamink.html|work=National Institute of Health}}</ref> Taking broad-spectrum antibiotics can reduce vitamin K production in the gut by nearly 74% in people compared with those not taking these antibiotics.

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