Study Description: Vitamin K is a vitamin found mostly in leafy green vegetables (e.g., spinach, broccoli, kale, and collards) and in soybean oil and canola oil. Vitamin K is necessary for normal blood clotting and may be needed for other activities, such as the body's use of lipids (fats) and glucose (sugar). Understanding the role of vitamin K in the body's use of lipids and glucose may help develop preventive strategies and early interventions to reduce obesity-related disorders such as dyslipidemia and type 2 diabetes. The purpose of this study is to determine if taking two capsules daily of vitamin K supplement for two months can improve levels of lipids (fat), glucose (sugar), and other measures in blood associated with dyslipidemia and diabetes risk. If your child meets all criteria and agrees to participate, he/she will be one of 60 participants, aged 8 to 17 years, taking part in this study.
Principal Investigator: Norman Pollock
Eligibility Criteria: To be eligible for the study, all subjects must meet the following criteria: 1) Age 8 to 17 years old 2) Body mass index (BMI for short) greater than or equal to 85th percentile 3) No other medical condition that would affect study results 4) Not using medications or receiving treatment likely to interfere with study evaluation
Compensation: Yes, subjects will be compensated.
Compensation Explanation: The following subject payment explanation is included in the Research Informed Consent Document for Parent/Guardian: Will my child be paid for taking part in the study? Your child will get a $60.00 Wal-Mart gift card for each completed study visit, to compensate you for your time and effort. If your child does not finish the study, we will compensate him/her for the visits he/she has completed. Your child will get $120.00 in gift cards total, if he/she completes all (2) study visit. If your child is receiving compensation over $100.00 from participating in this study, you will be required to complete a W-9 form.
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