How does weight gain affect polycystic ovary syndrome?

Weight gain is often a contributing factor in the development of polycystic ovary syndrome (PCOS). As you gain weight, or if you are obese, your insulin levels in your blood rise. Your insulin levels, in turn, raise your androgen levels which cause PCOS. This is why your doctor will often recommend a healthier diet and exercise regimen as the first step to managing PCOS.