Here, we present a narrative review of the widely understood changes to the nutrition and lifestyles of women and girls with polycystic ovary syndrome (PCOS). The database was analysed, combining PCOS entries with causes, diseases, diet supplementation, lifestyle, physical activity, and use of herbs. This study explains how different biochemical routes contribute to imbalances in lipid, carbohydrate, and hormone regulation among affected individuals. It also explores links with sleep problems, physiological and psychological shifts, and stress-related inflammation. These conditions consistently lead to the occurrence of severe diseases in patients suffering from diabetes, the fatty degeneration of internal organs, infertility, atherosclerosis, cardiovascular diseases and cancer. Change in lifestyles, diet patterns and proper selection of nutrients, pharmacological and natural supplementation in the form of herbs, and physical activity have been proposed. The progress and consequences of PCOS are largely modifiable and depend on the patient’s effort, although we have to take into account the genetic determinants.