This is also a problem I deal with and I’m 25 and I was dealing with it for a few years, but I’m kind of on a fading depression and getting better. But also I did have a blood test. Through checking myself I found out that I had a bacteria in my blood stream that effects blood flow all over the body including the jewels. I’m actually about to check with the doctor to see if any of it remains. But the blood bacteria is easy to get rid of with some common antibiotics :) I’m trying really hard to remember the name of the bacteria…but I am having trouble with remembering.
I would also suggest getting in shape and I hear that cutting out coffee and smoking is good (both of which I am trying at -said while he drinks his coffee and prepares a cigarette-)
Just do everything that is good for you in all other ways, a happy/healthy person means a happy healthy penis :)