Statistical analyses
MINOR
Data were analysed using the Statistical Package for the Social Sciences (SPSS) for Windows version 26.0 (IBM SPSS Statistics for Windows Armonk, NY, USA) and all values are expressed as mean ± SEM, unless otherwise specified.Two generalized mixed linear models were used to analyse the inter-individual differences due to dietary group and those intra-individual due to treatment. In the first model (Model 1), the fixed effects were: diet group (OMN, LOV, VEG), treatment (no-treatment, DHA-supplement, placebo), sex, and the interaction diet x treatment. Random effects were order of treatment (first placebo then DHA-supplement, first DHA-supplement then placebo) and participant (code). Repeated effect was visit (basal, after period 1, after washout, after period 2). Once minor differences were obtained between no-treatment and placebo with the first model, in the second model (Model 2), the same effects were analysed but only two levels of treatment were considered (DHA-supplement and placebo). To study the effects of diet group, sex and diet x sex on DHA changes, a two factors analysis of variance (ANOVA) was also employed. The significance level was set at 