Currently, polycystic ovary syndrome (PCOS) is a prevalent global health concern, characterized by hormonal and metabolic irregularities that commonly cause insulin resistance and obesity. These disturbances in metabolism and reproductive function can be alleviated through improved metabolic health. The precise origins of this syndrome remain unidentified, though its exact causes are yet to be determined, but some factors related to environment, such as diet, lifestyle, and nutraceutical intervention, are playing a crucial role in the management and treatment of this disease. With high prevalence of this disease in all over the world, the utilization of nutraceuticals, particularly oil seeds supplements, has gained prominence. Nowadays, flax seeds (Linum usitatissimum) have emerged as a nutraceutical offering significant amounts of α-linolenic acid (ALA), lignans, linoleic acid, and valuable dietary fibers, delivering diverse health benefits for patients. Flax seeds are believed to protect against endocrine dysfunctions, diabetes, dyslipidemia, obesity, cardiovascular diseases, and the entirety of the metabolic syndrome. This review seeks to evaluate the influence of lifestyle modifications, altered dietary patterns, and the use of natural nutraceuticals like flaxseed, its oil, or their combinations with other foods, on the hormonal, metabolic, and anthropometric profiles of women affected by PCOS.