Leuprolide

Leuprolide (brand name Lupron) is a GnRH agonist, a medicine that lowers estrogen in women or testosterone in men. It's used for conditions like prostate cancer, endometriosis, uterine fibroids, and sometimes precocious puberty. By shutting down the hormones that drive these conditions, it can help manage them effectively, but the same hormone drop affects bone.

Estrogen and testosterone both help keep bones strong by slowing down the natural breakdown of old bone. When leuprolide lowers these hormones, bone turnover speeds up and bone density can drop over time, similar to what happens during menopause or andropause. This is sometimes called androgen deprivation therapy when used for prostate cancer, and it's a well-recognized cause of drug-induced osteoporosis.

If you or someone you love is on leuprolide, it's worth talking with the prescribing doctor about monitoring bone density, since this is a known and expected side effect of the treatment. Doctors often track this with a DEXA scan before and during therapy. Any decisions about starting, stopping, or adding bone-protective treatment should be made with your doctor, who can weigh the benefits of leuprolide against the bone health tradeoffs.