The study investigated Meta-analysis on the effects of financial status on nutrigenomics and personalized diet in Nigeria. The study was guided by four research questions and three null hypotheses tested at 0.05 level of significance. The designs for this study were systematic review and meta-analytic. The study has infinite population. However, 53 studies on the effects of financial status on nutrigenomics and personalized diet in Nigeria were identified. Out of the 53 studies identified, only 31 studies which met the requirements (...) for meta-analysis were used as the sample. The sampling techniques were purposive and snowballing. A pro-forma was used for data collection. The instrument was validated by experts and the internal consistency reliability value of 0.97 was obtained using inter-rater agreement. Data collected with the instrument were analyzed with effect size, average weighted mean Z, Winer combined test and Fisher statistical transformation tables. The findings of the study revealed: moderate effect size on lower and upper financial status on nutrigenomics and personalized diet, small effect size on upper financial status on nutrigenomics and personalized diet, large effect size on lower financial status on nutrigenomics and personalized diet and variation on effect sizes of lower and upper financial status on nutrigenomics and personalized diet and significant effect sizes on upper, lower and consequently on lower and upper financial status on nutrigenomics and personalized diet 464 at Z-critical value of 1.96 at the 0.05 level of significance. (shrink)