In men, n-3 α-linolenic acid, the essential fatty acid of the n-3 family, tended to be positively correlated with obesity (r = 0.18, p = 0.04, q = 0.24), while a negative trend was found for long-chain n-3 docosahexaenoic acid (DHA) (r = −0.24, p = 0.009, q = 0.10).
When we distinguished individual TFA isomers, we found differential correlations with BMI according to gender, with elaidic acid (r = −0.14, p = 0.02, q = 0.05), and trans linoleic acid (r = −0.15, p = 0.01, q = 0.03) showing significant inverse correlations in women, while trans isomers of α-linolenic acid showed a positive trend in men (r = 0.22, p = 0.01, q = 0.10).