Omega-3 fatty acids tied to lower heart arrhythmia risk
New Delhi: Older adults who had the highest blood levels of omega-3 fatty acids, most commonly found in fish, were 30 percent less likely to later develop an irregular heartbeat than peers with the lowest blood levels of omega-3s, according to a US study.
Up to nine percent of US residents will develop a trial fibrillation by the time they reach their 80s, according to some estimates. The heart rhythm abnormality can lead to stroke and heart failure.
There are few treatments for the condition and they largely center on preventing strokes with blood-thinning drugs.
"A 30 percent lower risk of the most common chronic arrhythmia in the United States population is a pretty big effect," said Dariush Mozaffarian, senior author of the study and a professor at the Harvard School of Public Health.
Some previous studies have suggested that people who eat a lot of fish have a lower risk of developing atrial fibrillation to begin with, but others haven`t found the same link.
The omega-3 fatty acids measured in the new study, which was published in the journal Circulation, were eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA) and docosahexaenoic acid (DHA). They are found in oily fish and some enriched foods, such as eggs, as well as in fish oil supplements.
The earlier studies relied on questionnaires about how much fish people ate, which can only estimate the amount of omega-3s they ingested, Mozaffarian noted.
"Any given fish species can vary in its omega-3s by ten-fold," he told Reuters health.
To get a more accurate measurement of how much fish oil people in the study actually ingested, the researchers sampled blood from more than 3,300 adults over age 65.
Over the next 14 years, they tracked the participants` health and found that 789 developed atrial fibrillation.
Those with the top 25 percent omega-3 levels in their bloodstreams at the beginning of the study were about 30 percent less likely to end up with the arrhythmia compared to those with the bottom 25 percent blood levels.
"These are meaningful reductions in risk," said Alvaro Alonso, a professor at the University of Minnesota School of Public Health, who was not involved in the study.
A 30 percent reduction in risk would mean that instead of 25 out of every 100 people developing a condition, only about 17 of every 100 would.
Of the three omega-3 fatty acids, high DHA levels were linked to a 23 percent lower risk for atrial fibrillation, while EPA and DPA were not tied to any reduced risk.
Alonso cautioned that the study doesn`t prove eating fish is responsible for the lower rate of atrial fibrillation, but said there is some idea that the fatty acids found in fish could work by stabilizing the excitability of heart muscle cells.
He added that the results seem promising enough to warrant further studies that experiment with how fish oil might be used as a potential preventive measure against the arrhythmia.
More from India
More from World
More from Sports
More from Entertaiment
- Heat ave continues in India, death toll climbs to over 1,400
- Megastar Amitabh Bachchan slapped with Rs 1 crore notice
- Kenyan lawyer offers to marry Barack Obama's daughter Malia
- Salman Khan accident files burnt in Mantralaya fire
- Maggi likely to face ban in India!
- Street food in Delhi contains high levels of faecal matter
- TERI panel finds RK Pachauri guilty in sexual harassment case
- Rajasthan: High Court raps Chief Secy, DGP for failing to end Gujjar agitation
- Meet 92-year-old Phyllis Sues who dances toTango
- Priyanka, Ranveer talk about their film 'Dil Dhadakne Do'
- Erstwhile Mysuru kingdom gets new king
- Former Bihar CM Jitan Ram Manjhi meets PM Modi
- Watch: ISIS prisoner digging his own grave
- 50 percent refund on Tatkal ticket cancellation
- DNA: Pentagon report says Beijing accelerates land reclamation in South China Sea
- CBSE Class 10 (Class X Board) Result 2015 on cbse.nic.in, cbseresults.nic.in at 2 pm
- GUJCET Results 2015 declared on gseb.org
- Check cbseresults.nic.in, cbse.in for CBSE Class 10 X Board Result at 2 pm
- Rahul Gandhi takes another dig at NDA govt, says Manmohan gave lessons on economy to PM Modi
- Centre moves SC against Delhi HC order on LG's powers; hearing on Friday
- Gujjar agitation: Centre sending additional forces to vacate rail tracks, say sources
- Delhi HC backs LG, turns down plea challenging Jung's authority
- Log on to cbseresults.nic.in, cbse.nic.in at 2 pm for Class 10th Result 2015
- WBCHSE (wbchse.nic.in & wbresults.nic.in): West Bengal Class 12th Result to be declared on May 29
- CBSE (cbseresults.nic.in, cbse.nic.in) Class 10th (X Board) Result 2015 declared
- Former Bihar CM Jitan Ram Manjhi meets PM Modi, triggers tie-up speculation
- No radioactive leak at IGI airport, say AERB and Delhi govt
- WB Class 12 (HS) Result 2015 declared on wbresults.nic.in, wbchse.nic.in
- Maggi noodles likely to face ban in India, FSSAI orders sample examination
- Heatwave toll in Andhra Pradesh reaches 1,490