Cleveland Clinic finds six common OTC dietary supplements do not lower ‘bad cholesterol’ when compared to low-dose statins or placebo; supplements in the study included fish oil, garlic, cinnamon, turmeric, plant sterols, red yeast rice

Sample article from our Consumer Wellness

November 11, 2022 (press release) –

SPORT Trial presented during American Heart Association’s Scientific Sessions 2022

Media Contact
Hope Buggey 216.213.6192

Show Media Downloads
Findings from a Cleveland Clinic trial show that six commonly used dietary supplements marketed for improving heart health did not lower “bad cholesterol” when compared to a low-dose cholesterol-lowering medication (also known as a statin) or placebo. The six supplements studied included fish oil, garlic, cinnamon, turmeric, plant sterols and red yeast rice.

Results from the Supplements, Placebo or Rosuvastatin Study (SPORT) were presented today during a late-breaking science session at the American Heart Association’s Scientific Sessions 2022 and simultaneously published in the Journal of the American College of Cardiology.

“If you’re taking over-the-counter supplements for heart health or for cholesterol lowering, you should reconsider,” said Luke Laffin, M.D., study author and co-director of the Center for Blood Pressure Disorders in the Heart, Vascular & Thoracic Institute at Cleveland Clinic. “Unfortunately, many U.S. consumers believe cholesterol health supplements are safer than prescription medications and believe supplements are as effective, or more effective, than statins.”

Marketing of dietary supplements is regulated under the Dietary Supplement Health and Education Act of 1994 and overseen by the U.S. Federal Trade Commission rather than the Food and Drug Administration. Consequently, supplements do not need to meet the standards for safety and efficacy required for marketing of pharmaceuticals.

Elevated low-density lipoprotein (LDL), also known as bad cholesterol, is a major cause of coronary heart disease. LDL cholesterol causes the build-up of fatty deposits within the arteries, reducing or blocking the flow of blood and oxygen the heart needs. This can lead to heart attack or stroke. Many studies show that lowering LDL cholesterol reduces the risk for coronary heart disease. 

In the single-center, prospective, randomized, single-blind clinical trial, researchers analyzed health data for 190 adults between the ages of 40 and 75 with no history of cardiovascular disease. The participants were randomized to a low-dose statin medication rosuvastatin (5 mg daily), placebo, fish oil, cinnamon, garlic, turmeric, plant sterols or red yeast rice. The primary endpoint was the percent change in LDL cholesterol from baseline for rosuvastatin 5 mg daily compared with placebo and each supplement after 28 days.

Results showed that the percent LDL cholesterol reduction with rosuvastatin was greater than all supplements and placebo.  None of the dietary supplements demonstrated any significant decrease in LDL cholesterol compared with placebo. Rosuvastatin also had beneficial impact on blood triglycerides and total cholesterol, which help reduce cardiovascular risk.

Average LDL cholesterol reduction after 28 days was 37.9% among participants who took the statin, while changes in LDL cholesterol levels among those who took any of the dietary supplements were similar to those in the placebo group. The participants in the statin group had an average 24% decrease in total cholesterol, while both the placebo group and all dietary supplements showed no benefit.  Rosuvastatin resulted in a 19% decrease in blood triglycerides compared with placebo, but there was no difference in triglycerides for any of the dietary supplements.

Rates of adverse events were similar across all groups, although numerically higher among participants randomized to plant sterols or red yeast rice. Also, no significant adverse changes in liver function testing, estimated glomerular filtration rate, or blood glucose were observed with the use of rosuvastatin.

“Dietary supplement sales are estimated at nearly $50 billion annually in the United States and many supplements are marketed as natural alternatives for heart protection and cholesterol management,” said senior author Steven Nissen, M.D., Chief Academic Officer of the Heart, Vascular & Thoracic Institute at Cleveland Clinic. “For management of high cholesterol, supplements are often used by patients in place of statins, in the absence of high-quality data. This represents a major public health concern.”

The SPORT Trial was funded by AstraZeneca with an unrestricted grant. Cleveland Clinic has full control over the study methodology, data analysis, and discussion of clinical implications.

Dr. Laffin has served as a consultant or steering committee member for Medtronic, Eli Lilly, Mineralys Therapeutics, AstraZeneca. He is an advisor for LucidAct Health and Gordy Health.

Dr. Nissen has served as a consultant for many pharmaceutical companies and has overseen clinical trials for Amgen, AstraZeneca, Cerenis, Eli Lilly, Novartis, Novo Nordisk, The Medicines Company, Orexigen, Takeda and Pfizer. However, he does not accept honoraria, consulting fees or other compensation from commercial entities.

About Cleveland Clinic
Cleveland Clinic is a nonprofit multispecialty academic medical center that integrates clinical and hospital care with research and education. Located in Cleveland, Ohio, it was founded in 1921 by four renowned physicians with a vision of providing outstanding patient care based upon the principles of cooperation, compassion and innovation. Cleveland Clinic has pioneered many medical breakthroughs, including coronary artery bypass surgery and the first face transplant in the United States. U.S. News & World Report consistently names Cleveland Clinic as one of the nation’s best hospitals in its annual “America’s Best Hospitals” survey. Among Cleveland Clinic’s 72,500 employees worldwide are more than 5,050 salaried physicians and researchers, and 17,800 registered nurses and advanced practice providers, representing 140 medical specialties and subspecialties. Cleveland Clinic is a 6,500-bed health system that includes a 173-acre main campus near downtown Cleveland, 21 hospitals, more than 220 outpatient facilities, including locations in northeast Ohio; southeast Florida; Las Vegas, Nevada; Toronto, Canada; Abu Dhabi, UAE; and London, England. In 2021, there were 10.2 million total outpatient visits, 304,000 hospital admissions and observations, and 259,000 surgical cases throughout Cleveland Clinic’s health system. Patients came for treatment from every state and 185 countries. Visit us at Follow us at News and resources available at

Editor’s Note: Cleveland Clinic News Service is available to provide broadcast-quality interviews and B-roll upon request.


* All content is copyrighted by Industry Intelligence, or the original respective author or source. You may not recirculate, redistrubte or publish the analysis and presentation included in the service without Industry Intelligence's prior written consent. Please review our terms of use.

See our dashboard in action - schedule an demo
Chelsey Quick
Chelsey Quick
- VP Client Success -

We offer built-to-order consumer wellness coverage for our clients. Contact us for a free consultation.

About Us

We deliver market news & information relevant to your business.

We monitor all your market drivers.

We aggregate, curate, filter and map your specific needs.

We deliver the right information to the right person at the right time.

Our Contacts

1990 S Bundy Dr. Suite #380,
Los Angeles, CA 90025

+1 (310) 553 0008

About Cookies On This Site

We collect data, including through use of cookies and similar technology ("cookies") that enchance the online experience. By clicking "I agree", you agree to our cookies, agree to bound by our Terms of Use, and acknowledge our Privacy Policy. For more information on our data practices and how to exercise your privacy rights, please see our Privacy Policy.