In the recent research shows, fish oil could help prevent Alzheimer’s and give you a bigger brain. The people with higher levels of omega-3 fatty acids found in fish oil can have bigger brain volumes in later age. The method may be the equivalent to preserving one or two years of brain health. Eating more fish may help you bigger brain and protection from Alzheimer’s. Shrinking brain vain is a sign of Alzheimer’s and it is highly advised in the recent study to eat fish at least twice a week, including one portion of oily fish. The key omega-3 fatty acids is docosahexaenoic acid  which is supposed to support nerve cells communicate with each other.

The richest source is oily fish such as herring, mackerel and sardines. The study conducted on 1,111 women who were part of the Women’s Health Initiative Memory Study. After 8 years women were aged around 78, MRI scans were taken to measure their brain volume; those with higher levels of omega-3s had bigger total brain volumes 8 years later. And those with double as high levels of fatty acids (7.5 vs. 3.4 %) had a 0.7 % bigger brain volume, with the increase measuring up to two inches. The lower levels of fatty acids were linked to smaller sized brains. It is important to achieve higher level of fatty acids through diet and use of supplements and effect on brain volume is equivalent of delaying the normal loss of brain cells that comes with aging by 1 or 2 years. The higher levels of omega-3s also had a 2.7 % bigger volume in the hippocampus area, the brain’s key memory center.

In Alzheimer’s disease, the hippocampus starts to shrink even before symptoms appear. The study suggests the higher tissue reserve of omega-3 fatty acids may slow the loss of cognitive function that can accompany brain atrophy. The higher omega-3 tissue levels can be obtained by dietary changes actually may help in delaying cognitive ageing and or dementia.’ So far the best dietary source of omega 3 fatty acids is oily fish because the human body cannot yield omega-3 fatty acids. Moreover white fish is also a healthy food including cod, haddock and plaice though it comprises lower levels of vital fatty acids. Also fish oil supplements are highly recommended as protection against heart attacks and unexpected death, with consistent fish eaters a third more likely to survive a heart attack. Omega-3 fats work in numerous ways to decrease heart attack risk by cutting blood fats, sinking the chances of a blood clot and blocking dangerous heart rhythms that might otherwise prove fatal.

Now it is well thought that omega-3 fatty acids in fish oils may decrease inflammation of the brain and play a part in brain development and nerve cell regeneration. There has been diverse evidence as to the benefits of omega-3 fish oils on the brain and whether they may defend against memory decline and dementia. The study advises that higher levels of omega-3 fatty acids in blood are linked to bigger brain size but the likely reasons for this association need further investigation. The brain gets smaller in people with dementia, but it is unclear from the study what effect larger brain size would have on memory and thinking in the volunteers or their long-term risk of developing dementia. The right way to measure whether omega-3 could protect against dementia is through clinical trials and so far, trials of omega-3 supplementation have not shown benefits in protecting against cognitive decline. The brain shrinkage can be linked to dementia and bigger brain volumes could indicate a better ability to cope with the ravages of the condition, but it’s a big leap to draw this conclusion. Whilst interesting, this study still leaves us in the dark about what effect eating fish has on the development of dementia.


Originally posted 2014-07-01 16:08:41. Republished by Blog Post Promoter

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