In my last blog I contended that of all the different ways to treat cancer—hormone therapy, chemotherapy, radiation or surgery for example—immune therapy has the greatest potential to save lives: Only the immune system, by its very nature, has the ability to adapt to the many thousands of varieties of cancer.  Also, new breakthroughs in understanding how it works have led to real progress inharnessing the immune system to fight cancer. 

One of the unique characteristics of prostate cancer is its responsiveness to the withdrawal of testosterone. This “Achilles Heel” of prostate cancer was discovered in the 1940’s when surgical removal of the testicles was shown to induce cancer remissions. In 1985, Lupron, an injectable medication that works by tricking the testicles into ceasing testosterone production, was FDA approved. Orchiectomy, or surgical removal of the testicles, has been declining in popularity ever since.