Do they mean his blood test indicates a PSA reading of 200 ?
PSA is the test usually used to screen for PC and to to gauge the effectiveness of treatments. Men who do not have PC could normall have PSA reading of between 2 and 10, but with advanced cancer the reading can sometimes be 200 and considerably higher.
The aim of Hormone Therapy is to reduce the production of Testosterone and hormones and therefore slow or control the cancer growth. If effective in reducing cancer growth, subsequent PSA tests should begin to reduce considerably within a few months, often down to very low levels.
When hormone Therapy is effective in reducing hormone production, some men experience side effects like hot flashes. Good lifestyle, diet, staying active can help in reducing potential side issues.
If a medication is not effective, or causes problems, often an alternative product will be more suitable.
There are lots of publications about PC, but the best one I've read on Hormone Therapy is the book by Dr Charles "Snuffy" Myers. Dr Myers used Hormones as part of his own treatment, and has subsequently used it for many of his patients. His book is very comprehensive and includes information on diet, nutrition, supplements and medications.
He also outlines some of his case studies, including one with a PSA of 3905, a figure which most people find incredible.
Several friends have used Hormone Therapy including one who started it about 3 years ago. He's remained very active and travels extensively.
Best Wishes