Sadly,
As you get older, your penis and testicles may get slightly smaller. One reason is the buildup of fatty deposits in your arteries reducing blood flow to your penis. This can cause withering of the muscle cells in the spongy tubes of erectile tissue inside your penis. I figure if you keep a lower bodyfat, eat well, take some cialis of natural supps; you can stave off “Shrinkage”. I will say that older males 70-85yr usually have huge nuts!! Dont ask me how I know, lol. Prostate surgery will definitely shrink your penis and possibility of ED. Have an uncle that got prostate cancer and had a Robotic prostatectomy. He first had to deal with a difficult and painful recovery, as I took care of him through this. He was a bigtime serial Dater so this was not good! First he had to get Viagra because he was having dysfunction, then he had to get on TRT therapy because his drive was off. He said he wanted to but it was like having a semi or 2/3 hardness. He kept at it and started daily Cialis and kept on with his TRT. Improved his diet; beyond his Vape habit, lol. Anyway: he said it shrank his dick by about an inch! That was 3 years ago and now he said that he has no problems with sex or orgasm, but the loss of size was permanent! They do have unapproved injectables: some are temporary(hyaluronic acid) to see if you like it and in Asia/Brazil and even NYC; they use a permanent one; like what the kardashins uses for hips/booty. It is called PMMA : (polymethylmethacrylate), it has horror stories and success stories. He considered it until it was gonna cost around 20grand for the temporary one first, then about 5 visits ; also shit can go sideways. I often wonder if some pornstars use them, it isn’t surgery but a in-office procedure. Mainly used for Peyronie's disease, but now a lot are doing it . Safest is Hyaluronic Acid and it was avg of 48-68% increase in girth, 14-20% in glans penis(head), and 1/2-1in length. I saw the before and after: they call it the SWAG procedure.
Max
The more you know!