High serum omega-3 polyunsaturated fatty acid content protects against brain abnormalities

October 17, 2013

According to a new study, high long-chain omega-3 polyunsaturated fatty acid content in blood may lower the risk of small brain infarcts and other brain abnormalities in the elderly. The study was published in Journal of the American Heart Association.

In the Cardiovascular Health Study in the USA, 3,660 people aged 65 and older underwent to detect so called silent brain infarcts, or small lesions in the brain that can cause loss of thinking skills, dementia and stroke. Scans were performed again five years later on 2,313 of the participants.

Research shows that silent brain infarcts, which are only detected by brain scans, are found in about 20% of otherwise healthy elderly people.

The study found that those who had high long-chain omega-3 polyunsaturated fatty in blood had about 40% lower risk of having small compared to those with low content of these fatty acids in blood. The study also found that people who had high long-chain omega-3 polyunsaturated fatty acid content in blood also had fewer changes in the white matter in their brains.

Previously in this same study population, similar findings were observed when comparing those with high or low intake of fish. High content of long-chain omega-3 polyunsaturated fatty acids in blood is a marker for high intake of fatty fish, so the results from the current study support the beneficial effects of fish consumption on brain health.

Explore further: Low levels of omega-3 fatty acids may cause memory problems

More information: Virtanen, J. et al. Circulating Omega-3 Polyunsaturated Fatty Acids and Subclinical Brain Abnormalities on MRI in Older Adults: The Cardiovascular Health Study, J Am Heart Assoc. 2013 Oct 10;2(5):e000305.

Related Stories

Low levels of omega-3 fatty acids may cause memory problems

February 27, 2012

A diet lacking in omega-3 fatty acids, nutrients commonly found in fish, may cause your brain to age faster and lose some of its memory and thinking abilities, according to a study published in the February 28, 2012, print ...

Eating fish, nuts may not help thinking skills after all

September 25, 2013

Contrary to earlier studies, new research suggests that omega-3 fatty acids may not benefit thinking skills. The study is published in the September 25, 2013, online issue of Neurology, the medical journal of the American ...

Recommended for you

No new heart muscle cells in mice after the newborn period

November 5, 2015

A new study from Sweden's Karolinska Institutet shows that new heart muscle cells in mice are mainly formed directly after birth. After the neonatal period the number of heart muscle cells does not change, and A new study ...

Nanotechnology could spur new heart treatment

October 29, 2015

A new nanoparticle developed by University of Michigan researchers could be the key to a targeted therapy for cardiac arrhythmia, a condition that causes the heart to beat erratically and can lead to heart attack and stroke.


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.