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Fatty Acid Composition of Bone Marrow?

Answered on August 19, 2014
Created September 08, 2012 at 3:12 AM

I can't seem to find the fatty acid composition of bone marrow. Some sources claim it is low in saturated fat and higher in PUFA and MUFA, but they don't provide any references. This question was asked before (http://paleohacks.com/questions/31294/bone-marrow-fat#axzz25jVzB1RR) but there wasn't a conclusive answer.

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on September 08, 2012
at 08:29 AM

I found a few studies on the fatty acid composition of marrow fat in various animals:

Caribou: http://www.sciencedirect.com/science/article/pii/0010406X69913140

Dall sheep: http://www.sciencedirect.com/science/article/pii/0305049175900966

Ox: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1265411/?page=2

Elk, Deer, and Antelope: http://www.nature.com/ejcn/journal/v56/n3/full/1601307a.html#bib66

You'll see there's a fair amount of variation due to species, the season/temperature at the time of slaughter, and the section of the bone from which the marrow is taken. In general, monounsaturated fat tends to make up the largest portion (ranging from about 41% to 74% of the fat), saturated fat usually come second (ranging from about to 20% to 53% of the fat), and polyunsaturated fat content is generally fairly low (about 4-6%). Most marrow had some conjugated linoleic acid (often in greater amounts than other fat stores).

I'm pretty sure most of these sources were grass fed for what it's worth.

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