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<b>New Study Finds Aged Garlic Extract Can Slow—and Possibly Reverse—Progression for Heart Disease</b>

New Study Finds Aged Garlic Extract Can Slow—and Possibly Reverse—Progression for Heart Disease

Firefighters with ModerateRisk for Plaque Build-up Benefit from Taking a Combination of Garlic and Coenzyme Q10.

Firefighters have a two- to four-fold higher risk of having a cardiac event—such as a heart attack or sudden death—on the job compared to the general population. It appears that taking daily capsules of Aged Garlic Extract (AGE) and coenzyme Q10 (CoQ10) can slow—and may even reverse—the progression of atherosclerosis, a build-up of fatty plaque in the coronary arteries (vessels that bring blood to the heart), within this at-risk population, according to research presented in April 2011 at the American College of Cardiology’s 60th Annual Scientific Session (ACC.11). ACC.11 is the premier cardiovascular medical meeting, bringing together cardiologists and cardiovascular specialists to further advance cardiovascular medicine.

A PROMISING COMBINATION
Firefighters taking this combination supplement were not only less likely to have a stiffening of arteries after one year, but their blood vessels actually became more flexible compared to those whodid not. While researchers have previously reported that AGE can reduce the progression of subclinical atherosclerosis in an asymptomatic population, this is the first time AGE-CoQ10 was studied in combination and in individuals who are already at risk for atherosclerosis. CoQ10 is a potent antioxidant that can help fend off other chronic diseases such as cancer, coronary heart disease and Parkinson’s, which is why the researchers chose the AGE-CoQ10 combination for their study. “Because of the many complications associated with atherosclerosis, including heart attack and stroke, we know that the best way to limit these outcomes is to prevent the development of atherosclerosis early on,” said Vahid Nabavi Larijani, MD, research fellow, Los Angeles Biomedical Research Institute and co-investigator of the study. “It appears that the earlier an individual starts to use these supplements during the preliminary stages of atherosclerosis, the more beneficial the effects. It can help to reduce vascular stiffness and it actually retards the entire atherosclerosis process.”

THE STUDY
In this double-blind clinical trial, 65 Los Angeles County firefighters with a moderate risk for plaque build-up (as determined by calcium scoring) were randomly assigned to take a placebo (sugar pill) or AGE-CoQ10 for one year. Those in the treatment group took four capsules per day, for a total dose of 1,200 mg AGE and 120 mg CoQ10. Participants were not taking any atherosclerosis-preventing medications, such as statins. Researchers performed coronary artery calcium (CAC) scanning and carotid-radial pulse wave velocity (PWV) tests at baseline in order to determine the progression of atherosclerosis in each subject. There were no significant differences between the cardiovascular risk factors between the AGE-CoQ10 and placebo groups at baseline. Participants were then followed every three months to ensure adherence, conduct regular PWV tests and collect other lifestyle information (e.g., changes in stress or physical activity levels), and to report any adverse side effects. CAC scanning was repeated at one year. Firefighters taking AGE-CoQ10 had nearly half the rate of CAC progression compared to the placebo group (18 vs. 31 percent change from baseline CAC measurements, respectively; p=0.01) even after adjusting for all conventional risk factors. The rate of PWV change, on the other hand, decreased by 5.6 percent in the AGE-CoQ10 group, but increased 9.1 percent in the placebo group after one year. This was of note to authors because AGE-CoQ10 appeared to help reverse vascular stiffness, while the control group’s PWV measures worsened. Dr. Larijani explains that while there is some uncertainty about aged garlic extract’s active ingredient and its mechanism of action, some scientists believe it has a similar effect on cholesterol synthesis as statins and can reduce the production of bad cholesterols in the liver.“These results are promising and should prompt further research into this treatment,” Dr. Larijani said. “For at-risk populations, taking this very cost-effective, easy step may slow down the progress or even prevent many serious complications of atherosclerotic heart disease further down the line. Taking garlic is like having a blood pressure medication, an aspirin and a cholesterol-lowering medication all in one pill.” Individuals with moderate risk for atherosclerotic heart disease should consult their health care provider before taking this supplement as garlic can interfere with certain medications, and there are some contraindications for its use. It is not recommended for individuals with low blood pressure.

Dr. Larijani and Dr. Matthew Budoff, principal investigator, presented their study “Aged Garlic Extract and coenzyme Q10 Decrease Arterial Stiffness and Retard Progression of Coronary Artery Calcium in At- Risk Fire Fighters” on April 3, 2011, in New Orleans.
 
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