Abstract: In the present invention, inventors provide compelling evidence showing that PCOS neuroendocrine reproductive and metabolic dysfunctions are transmitted in PAMH mice for at least three generations. Inventors employed genome-wide methylated DNA immunoprecipitation (MeDIP) analysis to characterize methylated genes in ovaries from control and PAMH mice of the third generation, the first unexposed transgenerational offspring, together with transcriptome analysis in these tissues. Inventors identified many genes with altered transcriptome expression in ovarian tissues of PCOS-animals and they show that several key molecules associated to the PCOS phenotype are epigenetically regulated through DNA hypomethylation. Inventors report that several differentially methylated signatures found in the ovaries of PCOS-like mice are also present in blood samples from women with PCOS and from daughters born to women with PCOS.