With regard to DHA, EPA, DGLA, and GLA, which were able to
be detected by the present GC–MS method, no sex-based differences
were recognized for the -3 unsaturated fatty acids EPA
and DHA, while the -6 unsaturated fatty acids GLA and DGLA
were significantly lower in women than in men (p = 0.0034 and
0.0012, respectively). In contrast, most reports on serum fatty acids
in healthy volunteers have shown that there are no differences in
the concentrations of these fatty acids between men and women
[32], with the exception of the three studies described below.