May 20, 2009
Vitamin D Improves Brain Function In Old Folks?

Vitamin D for the aging brain.

Eating fish – long considered ‘brain food’ – may really be good for the old grey matter, as is a healthy dose of sunshine, new research suggests.

University of Manchester scientists in collaboration with colleagues from other European centres have shown that higher levels of vitamin D – primarily synthesised in the skin following sun exposure but also found in certain foods such as oily fish – are associated with improved cognitive function in middle-aged and older men.

The study, published in the Journal of Neurology, Neurosurgery and Psychiatry, compared the cognitive performance of more than 3,000 men aged 40 to 79 years at eight test centres across Europe.

The researchers found that men with higher levels of vitamin D performed consistently better in a simple and sensitive neuropsychological test that assesses an individual’s attention and speed of information processing.

This isn'r proof of cause and effect. But you already have compelling reasons to get enough vitamin D and these results suggest you might get an additional benefit if you ensure you get enough vitamin D.

Share |      Randall Parker, 2009 May 20 11:22 PM  Aging Diet Brain Studies

T. J. Babson said at May 21, 2009 10:39 AM:

Anyone know the latest advice on how much D3 to take, or how much sun it takes to produce the equivalent of 1000 IU of D3?

Nick G said at May 21, 2009 1:09 PM:

Chances are you want to take at least 2,000, and probably 5,000 IU of D3.

Individual needs vary greatly. The key is to get a blood test - you want your level over 30, for most labs, which is a higher level than was previously recommended.

Robert M. said at May 21, 2009 3:11 PM:

The rule of thumb is around 1000 IU/day per 25 lbs. of body weight, in the winter and less with sun exposure. You _must_ take vitamin D with dietary fat, or absorption is about a 1/10th normal.

Parish Mozdzierz said at May 23, 2009 5:21 PM:

Kurzweil's latest book Transcend has a good section on vitamin D. Appropriate amounts, name of the test you should take to determine your level, dangers associated with too much, etc. It's available in Google's book search.

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