Other people have answered this, but not with a reply to you.

ADT is either a shot or pills that will reduce your testosterone to below 20. It has side effects, but it usually prevent it prevents your cancer from growing and also can reduce the cancer you have. They like to do it before radiation to reduce the cancer. It also can stop metastasis from growing.

They can stop you thinking about sex, something your wife may not be pleased with.

The most common side effects are hot flashes, muscle deterioration, brain fog and fatigue. Not everybody gets all of them but usually gets one or two of them.

While on it, you need to exercise get to the gym do weightlifting, to keep your muscles from deteriorating.

It can save your life and gives you more years to live without the cancer growing.

ADT=Androgen Deprivation Therapy. Most Prostate Cancer (PC) stops or slows spread when deprived of testosterone and other androgens. PC that does not is called "castration-resistant." Today most "castration" is done chemically with shots or pills, i.e., ADT.