PCOS study reveals surprising effects of birth control and metformin on metabolic risks

Polycystic ovary syndrome (PCOS) affects millions of women and remains the leading cause of female infertility. The condition often brings symptoms like irregular periods, weight gain, and excess hair growth. Now, a new study has examined how common treatments—birth control pills and metformin—impact the risk of metabolic syndrome in these patients.

Metabolic syndrome is a cluster of conditions that increase the chances of heart disease and diabetes. Researchers wanted to see if birth control pills or metformin influenced its development in women with PCOS.

The findings showed no significant difference in metabolic syndrome risk among those taking birth control pills, metformin, or both. Birth control pills alone did not raise the risk, even in overweight women. In fact, women using them saw slight reductions in weight, waist size, and stomach fat compared to their starting measurements. Metformin, however, came with drawbacks. Patients reported frequent gastrointestinal issues, such as diarrhoea, leading many to skip doses. Despite these side effects, the drug did not lower the risk of metabolic syndrome on its own.

The study confirms that birth control pills, whether used alone or with metformin, do not increase metabolic syndrome risk in PCOS patients. While metformin caused side effects that reduced adherence, neither treatment provided a clear advantage in preventing the syndrome. These results may help guide treatment choices for women managing PCOS.