Fish oil supplements ‘don’t boost brain power’April 22nd, 2010 - 12:51 pm ICT by ANI
Washington, Apr 22 (ANI): Fish oil supplements offer no benefits for cognitive function in older people, according to a new study.
The OPAL study investigated the effects of taking omega-3 long-chain polyunsaturated fatty acid supplements over a two-year period on the cognitive function of participants aged 70-80 years.
The number of people with cognitive impairment is rising and it is estimated that by 2040, more than 81 million people globally will have dementia.
Some studies have suggested that high intakes of omega-3 fatty acids, most commonly found in oily fish, are important for the maintenance of good cognitive health in later life.
The OPAL (Older People And omega-3 Long-chain polyunsaturated fatty acids) study was a randomised controlled trial led by Alan Dangour, Senior Lecturer at the London School of Hygiene & Tropical Medicine and colleagues.
The study enrolled 867 participants aged 70-80 years from General Practice clinics in England and Wales.
Trial participants who all had good cognitive health at the start of the study were randomly assigned into two groups, one of which received fish oil capsules while the other group received a placebo for two years.
Trained research nurses assessed cognitive function at the start and end of the study by using a series of paper and pencil tests of memory and concentration.
After two years, those participants receiving fish oil capsules had significantly higher levels of omega-3 fatty acids in their blood than those participants receiving placebo capsules.
However, cognitive function did not change over the course of the study in either group of participants and there was no evidence that the consumption of omega-3 fatty acids had a benefit for cognitive function in older people.
“From the data we have collected in the OPAL study there is no evidence of an important benefit for memory or concentration of increased omega-3 fatty acid consumption over a two year period among older people with good cognitive health. However, it is important to keep in mind that poor cognitive function can take many years to develop and although this is the longest trial of its kind ever conducted, it may be that it was not long enough for any true beneficial effects to be detected among this healthy cohort of older people,” said Dr. Alan Dangour.
The study was published in the American Journal of Clinical Nutrition. (ANI)
- Fish oil does not improve memory of elderly - Apr 22, 2010
- Omega-3 eases anxiety among young - Jul 14, 2011
- Omega-3 fatty acids limit smoking damage - Apr 22, 2012
- Unique genetic adaptation helped our brain grow - Apr 13, 2012
- Fish oil 'can help fight psychosis' - Feb 02, 2010
- Will fish oil accelerate weight loss? - Jan 04, 2011
- Omega-3 pills unable to prevent heart attacks - Sep 12, 2012
- Omega-3 fatty acids boon for undersized babies - Feb 22, 2012
- Fish livers contain beneficial fatty acids - Apr 30, 2011
- Fish oil in pregnancy doesn't boost baby's brain power - Oct 20, 2010
- Fish diet in pregnancy bolsters progeny's intelligence - Feb 01, 2012
- DHA 'fish oil' supplements 'not useful for those with mild Alzheimer's' - Nov 03, 2010
- Giving fish oil capsules to heart patients can save 10,000 lives a year - Sep 02, 2010
- Fish livers 'are good source of beneficial fatty acids' - Apr 29, 2011
- Fish oil does not help with people with heart rhythm problem: Study - Nov 16, 2010
Tags: 3 fatty acids, brain power, cognitive function, cognitive health, cognitive impairment, fatty acid supplements, fish oil capsules, fish oil supplements, london school of hygiene, long chain polyunsaturated fatty acids, oily fish, omega 3 fatty acids, pencil tests, polyunsaturated fatty acids, practice clinics, randomised controlled trial, research nurses, senior lecturer, trial participants, tropical medicine