Omega-3s: Good for Your DNA
by Alan Muir
DHA + EPA = Good DNA
Huh? You have heard the praise over omega-3 fatty acids offering significant benefits to heart, cognitive, and joint health, but now research shows omega-3s can slow down the process of aging.
How does this work? Omega-3 fatty acids reduce the rate of telomere shortening. Telomeres are DNA sequences on the end of chromosomes that prevent chromosome deterioration and aid replication. When cells can no longer replicate, cellular dysfunction and aging occur. Researchers find the rate of telomere shortening affects how quickly you age.
Scientists have been reviewing several factors related to telomere shortening and the aging process, including the benefits of omega-3s. Many studies have indicated high omega-3 consumption improves cardiovascular outcomes and survival rates, but the underlying mechanisms have not been understood. A study published in JAMA measured omega-3 fatty acid blood levels in approximately 600 people with coronary heart disease. Researchers measured omega-3 fatty acid levels at the beginning of the study and then five years later, finding high omega-3 dietary intake significantly reduced the rate of telomere shortening. This effect may be related to omega-3s ability to reduce the formation of oxidative stress, which significantly damages the heart. Omega-3s may also increase the activity of the enzyme, telomerase, which sustains telomere length.
Bottom Line: Omega-3s offer youthful, heart healthy, and telomere sustaining benefits. Here’s to your DNA.
Reference
Farzaneh-Far R, Lin J, Epel ES, Harris WS, Blackburn EH. Association of Marine Omega-3 Fatty Acid Levels With Telomeric Aging in Patients With Coronary Heart Disease. JAMA. 2010; 303(3):250-257.
