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Nicotinamide Riboside and Ketone Metabolism

Office of Patient Recruitment

Dietary Supplements and Keto Sleep Calories

a collection of healthy foods

healthy foods grouped together

Dr. Kevin Hall and his team at the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) are seeking male volunteers aged 18-65 and female volunteers aged 18-50 for a study on how low-carb (ketogenic) diets, with or without an investigational dietary supplement called Nicotinamide Riboside, impacts energy levels and metabolism during sleep.

You May Qualify if You

  • Have stable weight
  • Can perform moderate exercise on a stationary bike

Study Design

  • Two two-week inpatient stays at the NIH Clinical Center
  • Blood work, urine, and stool collections
  • Two whole-body X-ray (DXA) and MRI scans
  • Daily sleep and physical activity monitoring

The NIH Clinical Center, America's Research Hospital, is located in Bethesda, MD, on the Metro Red Line (Medical Center stop).

For More Information

Office of Patient Recruitment
800-411-1222
TTY users dial 7-1-1
Email: ccopr@nih.gov 
Or go online
Refer to study # 001690-DK

Department of Health and Human Services
National Institutes of Health Clinical Center (CC)
National Heart, Lung and Blood Institute (NHLBI)