Pomegranate juice: A cure for prostate cancer?

Is it true that pomegranate juice may slow the growth of prostate cancer? How much should I drink?

- Ed / Texas

Mayo Clinic urologist Erik Castle, M.D., and colleagues answer select questions from readers.

Answer

Preliminary research suggests that drinking pomegranate juice may slow the progression of prostate cancer. One study showed that after surgery or radiation for prostate cancer, the length of time it took for prostate-specific antigen (PSA) to double was significantly longer in men who drank 8 ounces (0.24 liters) of pomegranate juice daily for up to two years. A shorter doubling time indicates that the cancer is progressing more rapidly.

Although these results are promising, they're based on a small sample of only 46 men. For this reason, it's too early to say whether or not pomegranate juice can definitely slow the growth of prostate cancer. However, pomegranate juice is generally safe to drink.

Consult your doctor before starting any dietary or herbal supplement. Pomegranate juice may affect metabolism of certain prescription medications.