Background: Polycystic Ovary Disorder (PCOS) is perceived as the most widely recognized endocrinopathy in reproductive women. This study aimed to assess the relationship between the lifestyle and frequency of polycystic ovary syndrome in Saudi Arabia.Methods: This is a case-control study conducted on females at princess Nourah University (PNU), King Fahad Medical City (KFMC) and malls in Riyadh city, Saudi Arabia. The study included females in the reproductive age including 401 controls and 122 PCOS cases.Results: History of pregnancy related disorders was higher among the PCOS women in comparison to controls, while abortion represented the highest percentage in both cases and controls. Family history of polycystic ovary syndrome was doubled in cases than controls. There was significant increase in the percentage of hypothyroidism and hyperlipidemia in polycystic ovary syndrome patients (P <0.001). Snoring, use of oral contraceptives, high prolactin level, incidence of menorrhagia and urinary tract infection were significantly higher in cases than controls (P <0.001). In addition, there was no difference between controls and polycystic ovary syndrome cases regarding their dietary intake. On the other hand, physical activity was significantly higher in controls compared to polycystic ovary syndrome group.Conclusions: This study supports previous studies that revealed a relation between polycystic ovary syndrome and endocrinological disorders such as hypothyroidism, hyperprolactinemia, and obesity. On the other hand, there is no relation between dietary intake and PCOS, however exercising regularly can decrease the possibility of having the disease.