Given that glutamate carboxylation or decarboxylation is key to the metabolic role of osteocalcin (at least in mouse models) and that carboxylation is vitamin K dependent, it is critical to isolate the effect of vitamin K manipulation on carboxylation of osteocalcin and its subsequent effect on glucose metabolism in clinical trials. The purpose of this randomized, double-blind, placebo-controlled clinical trial in adults is to determine whether eight weeks of daily supplementation with vitamin K2 (menaquinone-7) can improve markers in blood associated with diabetes risk.

Inclusion Criteria:

1. Healthy adults between 18 and 65 years old
2. Subject understands the study protocol and agrees to comply with it
3. Informed Consent Form signed by the subject

Exclusion Criteria:

1. Subjects using vitamin supplements containing vitamin k
2. Subjects with (a history of) metabolic or gastrointestinal diseases including hepatic disorders
3. Subjects presenting chronic degenerative and/or inflammatory diseases
4. Subjects receiving systemic treatment or topical treatment likely to interfere with evaluation of the study parameters (salicylates, antibiotics)
5. Subjects receiving corticosteroid treatment
6. Subjects using oral anticoagulants
7. Subjects with a history of soy allergy
8. Subjects who have participated in a clinical study more recently than one month before the current study