Possible cancer protection from prostate drugs

Early research suggested that 5-alpha-reductase inhibitors (5-ARIs), a class of drugs used to treat prostate enlargement, might increase the risk of developing more aggressive prostate cancer. However, newer studies have found that not only do the drugs appear to pose no extra risk, they may even protect against prostate cancer.

For instance, research from the Prostate Cancer Prevention Trial study in 2013 showed that taking the 5-ARI finasteride (Proscar) for seven years could lower the chance of getting low-grade prostate cancer by 25% among men ages 55 and older. A follow-up study of almost 9,500 men, published in the Nov. 1, 2018, issue of the Journal of the National Cancer Institute, also sh