 Polycystic ovary syndrome, PCOs, is a common condition that affects up to one in five women of reproductive age. It has significant clinical implications including reproductive, metabolic and psychological features. PCOs is a heterogeneous condition with a wide range of phenotypes depending on life stage, genotype, ethnicity and environmental factors. The increasing obesity prevalence worldwide exacerbates the features of PCOs, making it even more important to focus on lifestyle improvement as the initial treatment strategy. Modest weight loss has been shown to improve many of the features of PCOs. Comprehensive evidence-based guidelines are needed to aid early diagnosis, appropriate investigation, regular screening and treatment of this common condition. This review primarily focuses on the cardiometabolic and psychological features of PCOs.