It has been accepted that food customs are closely associated with the quality of life in both men and women's reproductive life. Food customs are speculated to not only influence the present lifestyle but also to induce gynaecological disorders such as dysmenorrhoea, spermatogenesis and irregular menstruation. though there is no consistent definition of regular or normal menstruation, epidemiologic evaluation of menstrual cycle has been becoming an important issue. In addition, latent development of organic diseases such as endometriosis, which are accompanied by dysmenorrhoea, is a concern under the current nutritional environment. Thus, it is an important issue to evaluate the present situation of eating habits in couples and estimate the influence of these habits on the quality of reproductive functions. A multi-faceted therapeutic approach to improving fertility involves identifying harmful environmental and occupational risk factors, while correcting underlying nutritional imbalances to encourage optimal reproduction and its function.