0

votes

Human brain fat composition

Commented on July 03, 2015
Created January 05, 2013 at 11:12 PM

As far as I know, brain is 60% fat. What kind of fat is this? MUFA or saturated, probably? Please provide links to sources of information.

Medium avatar

(10611)

on July 03, 2015
at 04:55 PM

Brain is about 30% fat, 12% protein, and the rest water. Good food for Paleos. Not just for zombies anymore.

61844af1187e745e09bb394cbd28cf23

(11058)

on January 06, 2013
at 12:14 AM

"Please provide links"...or do the searches yourself. Why are people so lazy?

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on January 06, 2013
at 12:02 AM

@dan, well you have to type something in after you visit the site, maybe try this instead:http://lmgtfy.com/?q=Human+brain+fat+composition

194d8e8140425057fe06202e1e5822a7

(3979)

on January 05, 2013
at 11:58 PM

this is helpful

194d8e8140425057fe06202e1e5822a7

(3979)

on January 05, 2013
at 11:57 PM

...not helpful.

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5 Answers

best answer

4
6714718e2245e5190017d643a7614157

on January 05, 2013
at 11:25 PM

1e8fbc4aae14e75fa67b2de9a5c80507

(0)

on July 03, 2015
at 10:29 AM

 Page not found

194d8e8140425057fe06202e1e5822a7

(3979)

on January 05, 2013
at 11:58 PM

this is helpful

2
F6cc787f16af028a661e67f8bc7523a2

on August 24, 2013
at 04:50 PM

Unfortunately it's not true. The total lipid (generally fat) content of the brain is only 5-15%. The rest is mainly water with some protein (1).

Most of the lipid content of the brain is in the myelin sheath that surrounds and insulates the nerve axons and enables faster transmission of current - 120 m/s in the thickest myelinated axons vs. 1 m/s in non-myelinated axons (2). The exact composition can be found in Table 4-1 in (3).

The 60% figure seems to date back to a paper from the 1960's (4). The confusion seems to arise because the percentage is based on dry weight, so if the 68-80% water (1) is excluded then 60% is about right, however it is not applicable to a live brain.

Sources:
(1): Reiner Salzer and Heinz W. Siesler (2009) Infrared and Raman Spectroscopic Imaging, p131
(2): Per Brodal (2010) The Central Nervous System, p23
(3): Scott Brady, George Siegel, R. Wayne Albers and Donald Price (2005) Basic Neurochemistry: Molecular, Cellular and Medical Aspects, p57
(4): John S. O'Brien and E. Lois Sampson (1965) Lipid composition of the normal human brain: gray matter, white matter, and myelin, The Journal of Lipid Research, 6, pp537-544

Medium avatar

(10611)

on July 03, 2015
at 04:52 PM

It's more like 30%.

2
66aa2c18606c628985a78c3e70092684

on January 05, 2013
at 11:45 PM

www.google.com

www.bing.com

www.wikipedia.org

194d8e8140425057fe06202e1e5822a7

(3979)

on January 05, 2013
at 11:57 PM

...not helpful.

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on January 06, 2013
at 12:02 AM

@dan, well you have to type something in after you visit the site, maybe try this instead:http://lmgtfy.com/?q=Human+brain+fat+composition

0
Medium avatar

(10611)

on July 03, 2015
at 04:45 PM

Unless you're a zombie who cares.

A couple weeks ago I had some tasty brains at a Basque restaurant. They were prepared in a brown sauce with peppers, onions and tomatoes. They reminded me of stir fried prawns.

According to USDA, the fat breakdown of cooked beef brains is approximately 12% saturated fat, 8% monounsaturated based on cooked weight.

http://ndb.nal.usda.gov/ndb/foods/show/7471?fgcd=&manu=&lfacet=&format=&count=&max=35&offset=&sort=&qlookup=sweetbreads

0
1e8fbc4aae14e75fa67b2de9a5c80507

on July 03, 2015
at 10:36 AM

Best answer link is broken, can be found on Internet Archive.

Stupid website, can't even post a link.

Medium avatar

(10611)

on July 03, 2015
at 04:51 PM

You have to use the chain-link tab to post a URL.

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