Determinants of Vitamin K Metabolism

• Status: Completed
• Trial end date: 2009-07-01
• Target enrollment: 0
• Participant gender: All

Summary

The purpose of this study is to learn how the body responds to different amounts of vitamin K in the diet in order to understand the roles that vitamin K may have in the body. We also need to determine if older adults need more or less vitamin K in their diet compared to younger adults in order to maintain normal body stores of vitamin K.

• Phase: N/A
• Accepts Healthy Volunteers?: Accepts Healthy Volunteers

Details

• Lead Sponsor: Tufts University
• Treatments: Vitamin K; Vitamin K 1; Vitamins

Criteria

Inclusion Criteria:

-

Exclusion Criteria:

• kidney, GI, or liver disease requiring treatment

• prescribed osteoporosis medications in the previous 3 months

• use of acid reducers more than twice per week

• blood clotting disorder and/or abnormal clotting time

• warfarin or anticoagulant use in the previous 12 months

• diabetes

• smoking

• hormone therapy in the previous 3 months

• oral contraceptive use in the previous 3 months; pregnancy

• strict vegetarian diet