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News Provided by: Global Organization for EPA and DHA Omega-3s
SALT LAKE CITY, Jan. 3, 2017 /PRNewswire/ — EPA and DHA omega-3s reduce the risk of coronary heart disease (CHD), according to results of a new, comprehensive meta-analysis published in the Mayo Clinic Proceedings and sponsored by the Global Organization for EPA and DHA Omega-3s (GOED). Among randomized controlled trials (RCTs), there was a statistically significant reduction in CHD risk in higher risk populations, including:
16 percent in those with high triglycerides and 14 percent in those with high LDL cholesterol.
A non-statistically significant 6 percent risk reduction among all populations in RCTs, a finding supported by a statistically significant 18 percent reduced risk of CHD among prospective cohort studies.
“What makes this paper unique is that it looked at the effects of EPA and DHA on coronary heart disease specifically, which is an important nuance considering coronary heart disease accounts for half of all cardiovascular deaths in the U.S.,” said Dr. Dominik Alexander, lead author and Principal Epidemiologist for EpidStat. “The 6 percent reduced risk among RCTs, coupled with an 18 percent risk reduction in prospective cohort studies — which tend to include more real-life dietary scenarios over longer periods — tell a compelling story about the importance of EPA and DHA omega-3s for cardiovascular health.”
Additional study details include:
The study reviewed 18 randomized controlled trials (RCTs) and 16 prospective cohort studies, with 93,000 and 732,000 subjects, respectively.
The study examined outcomes such as myocardial infarction, sudden cardiac death and coronary death.
The study compared the results of RCTs, which explore interventions under strict clinical conditions, to those of prospective cohort studies that are observational, and followed larger populations for longer periods of time.
“There are important public health implications related to reducing the risk of coronary heart disease, and therefore we are encouraged by the results of this comprehensive analysis,” said Dr. Harry Rice, Vice President of Regulatory and Scientific Affairs for GOED. “It’s also important that the observed risk reductions were even stronger in patient populations with elevated triglycerides and LDL cholesterol levels, two risk factors that affect more than one quarter of the American population.”
“The results confirm that increasing omega-3s is a healthy lifestyle intervention that can contribute towards reductions in CHD risk,” added Adam Ismail, Executive Director of GOED. “Remember that increasing omega-3 intakes is basically just improving the quality of one’s diet slightly, like reducing the amount of sodium or increasing your dietary fiber. It is a simple, inexpensive, and achievable change that most consumers need to make to optimize their health.”
An accompanying editorial in Mayo Clinic Proceedings also acknowledges the importance of the study. “The meta-analyses of Alexander and colleagues suggests that omega-3 fatty acid intake may reduce risk of adverse CHD events, especially among people with elevated levels of TGs or LDL-C.…omega-3 fatty acid intake of at least 1 gram of EPA+DHA per day, either from seafood or supplementation (as recommended by the American Heart Association), continues to be a reasonable strategy,” said the authors.
Study authors did point out that further clinical trials looking specifically at CHD outcomes may continue to provide a better understanding of the promising beneficial relationship between EPA/DHA and CHD risk. Current RCTs have varying durations, different baseline CHD status for study participants, and utilize several methods for patient selection and randomization. Future studies should:
Increase patient populations to account for dropout rates in longer trials.
Extensively detail how subjects are diagnosed to create uniform diagnostic criteria.
Be appropriately powered to detect an effect in current clinical conditions.
Measure baseline omega-3 intake or status of study participants to determine the extent to which it confounds results.
The study was supported by a grant from GOED, which played no role in study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the article for publication.Media Contact:
SOURCE Global Organization for EPA and DHA Omega-3s