The studies must be looked at and analyzed carefully. Prostate problems and cancer usually do not appear until men are older. By that time, their levels of testosterone are reduced.Because of reduced blood levels of testosterone that comes with aging, tTesticle size shrink with old age, (not necessarily scrotum size) . Similarly, penis size shrinks with old age regardless of whether there is prostate treatment. On the other hand, some treatment for prostate cancer involves removal of all testosterone from the system, and even the introduction of estrogen. These patients develop larger breasts, and smaller penises and smaller testicles. At a lesser level of treatment, is BPH, benign prostatic hyperpasia. That is medical lingo for enlarged prostate. How is it usually treated:
with an alpha blocker such as the brand "Flo-Max". This drug treatment shrinks the size of the enlarged prostate temporarily, so pills are needed every night. Side effects of treatment for BPH: reduced volume of semen, and shrinking penis size. The problem with even thinking about testosterone patches or shots to offset this, is that it makes the prostate go crazy. Prostate cancer gets wild, and BPH becomes so acute that the patient may have difficulty urinating at all. His urethra gets substantially blocked by the enlarged prostate. So testosterone is out. The thing I can suggest for a man getting treatment for prostate enlargement or cancer, is to avoid soya products. Soy mimics estrogen in the bloodstream, and body, which would probably lead to: further shrinkage of the penis.
There is a silver lining in this tale of woe: smaller penis size should not impair sex or the female enjoyment of sex. But to be certain, more attention should be paid to sexual skills to pleasure and satisfy the man's female partner. On the flip side, a smaller penis would enable easier fellatio, and easier anal penetration. So it's not all bad.