Polyunsaturated fatty acid

The polyunsaturated fatty acids (PUFA) are fatty acids which contains more than one double bond.

Methylene Interrupted Polyenes
These fatty acids have 2 or more cis double bonds which are separated from each other by a single methylene group. The essential fatty acids comprise the omega-3 and -6 methylene-interrupted fatty acids. See more at Essential fatty acids&mdash;Nomenclature

Function and effects
The biological effects of the &omega;-3 and &omega;-6 fatty acids are largely mediated by their mutual interactions, see Essential fatty acid interactions for detail.