A medication taken by millions of people with type 2 diabetes has revealed an unexpected bonus: metformin appears to reduce the risk of prostate cancer, alongside benefits for heart and brain health.

Researchers reviewed a decade of studies covering 2.25 million patients and found that metformin users experienced not only lower prostate cancer risk, but also reduced rates of cardiovascular disease and dementia. The findings, published in Rejuvenation Research, suggest this affordable, widely-available drug may offer protective benefits that extend well beyond its primary use in managing blood sugar levels. Read the full story →

Today's takeaway: Existing medications sometimes surprise us with hidden health benefits—a reminder that ongoing research continues to unlock new ways to protect our wellbeing.