Soy For Prostate Cancer 
By Dr. Jay Adlersberg
(New York-WABC, September 17, 2004) ‹ Prostate cancer is the number one cancer diagnosed in men over age 45. While this disease is very common in the United States, it's not as common in Japan or China. So, what's the difference? What we eat could be the key to preventing prostate cancer.
Every day, Art Blumenthal has his milk. But his milk is soy milk. He hopes it will slow the growth of his prostate cancer.
Art Blumenthal, Has Prostate Cancer: "Anything we can do, especially something as inexpensive as taking soy, would be a swell idea."
The idea to consume soy came about after Art was part of a research study looking at soy and prostate cancer.
Nagi B. Kumar, Ph.D., R.D, Registered Dietician, Moffitt Cancer Center, Tampa, FL: "Populations that consume isoflavones or soy and soy products have the lowest rate of these hormonal cancers."
Doctor Nagi Kumar says isoflavones are the key ingredient in soy for cancer patients.
Her research focused on PSA level, which is an indicator of prostate cancer progression. The study shows, in 69 percent of the men taking soy, PSA levels either dropped or remained stable. 20 percent had a 3.0-reduction in just three months.
Nagi B. Kumar, Ph.D., R.D.: "It's not "Vitamin I" yet, but I predict it's going to be, because it's vital to prevent diseases like cancer."
Doctor Kumar recommends men and women eat two to three ounces of soy two to three times a week instead of relying on a supplement.
Nagi B. Kumar, Ph.D., R.D.: "It's so much easier, and the absorption, the utilization is much better as a food product than a capsule."
Art Blumenthal: ""First of all, it's not so bad to take, and second of all, it might help."
For something so simple, that's a gamble Art's willing to take.
Doctor Kumar says tofu and miso are the best choices for including soy in your diet because they're fermented and are better absorbed by the body. However, she says any soy is better than none.