for people ages 18-25 (full criteria)
at La Jolla, California
study started
completion around
Principal Investigator
by Jeffrey Schwimmer, MD



This study will determine changes in plasma C15:0 levels in young adults with BMI ≥ 25 in response to 12 weeks of daily oral C15:0 supplementation.

Official Title

A Double Blind, Randomized, Single Center, Controlled, Two Arm Trial of Dietary C15:0 Supplementation in Young Adults at Risk for Metabolic Syndrome


Metabolic syndrome is a disturbance in how the body processes both carbohydrates and fats. This condition has become common in children and young adults, especially in association with excess body fat. People with metabolic syndrome are at increased risk for type 2 diabetes, cardiovascular disease, and nonalcoholic fatty liver disease (NAFLD). Diet is believed to play an important role in both developing and treating metabolic syndrome. Studies have shown that low dietary intake of a type of fats known as odd chain fatty acids is associated with a higher risk for each of the metabolic syndrome associated conditions of diabetes, heart disease, and liver disease. Supplementation with one specific odd chain fatty acid known as C15:0 has shown to decrease the effects of metabolic syndrome in both cellular and animal models. In people, the epidemiology of consumption of C15:0 in the diet is consistent with this belief. However, clinical trials have yet to be done with supplemental C15:0. This study is a pilot study of C15:0 supplementation in a group of young adults at risk for metabolic syndrome. The study will determine how well supplementation with C15:0 daily for 12 weeks is able to raise levels of C15:0 in the blood when compared to placebo. The study will also look for signs that increasing blood levels of C15:0 leads to changes in physiology.


Metabolic Syndrome, Syndrome, Supplement


You can join if…

Open to people ages 18-25

  • Age 18 through 25 years
  • Body Mass Index ≥ 25 Kg/m2

You CAN'T join if...

  • Reported habitual dietary intake of C15:0 that consistently exceeds 250 mg per day
  • Significant alcohol consumption (average consumption >1 drink/day for females, >2 drink/day for males or episodes of binge drinking >5 drinks/day)
  • Inability to swallow capsules
  • Type 1 or Type 2 Diabetes
  • Liver Cirrhosis
  • Pregnancy
  • Body weight greater than 125 kg at screening
  • LDL-cholesterol > 160 mg/dL
  • Triglycerides > 500 mg/dL
  • Hemoglobin < 10.0 gm/dL
  • Current Omega 3 Fatty Acid supplement usage
  • Current use of Statin medications
  • Any other condition which, in the opinion of the investigator, would impede compliance or hinder completion of the study
  • Patients who are currently enrolled in a clinical trial or who received an investigational study drug within 180 days of screening.
  • Subjects who are not able or willing to comply with the protocol or have any other condition that would impede compliance or hinder completion of the study, in the opinion of the investigator.
  • Failure to give informed consent


  • UC San Diego
    La Jolla California 92037 United States

Lead Scientist at UCSD

  • Jeffrey Schwimmer, MD
    Professor Of Clinical, Pediatrics, Vc-health Sciences-schools. Authored (or co-authored) 150 research publications


in progress, not accepting new patients
Start Date
Completion Date
Jeffrey B. Schwimmer, MD
Study Type
Expecting 30 study participants
Last Updated