This article from the American Family Physicians touches on ED related causes / treatment options.

https://www.aafp.org/afp/2016/1115/p820.html

Agreed, fire your Doctor. My ED also begin early 30's, 25 years later with no lost length and actually an increased girth. I am at 100 units tri-mix and will soon be moving on to quad-mix while additionally using a VED. Do some online research before your next appointment and make a plan. Find a doc...

Using a VED has been very effective for me, 20+ years, as I can always count on it to work. It takes a while and a bit of experimentation to find the right combination of pump time, pressure, band(s), etc. that works. I found I will get a better seal if I pull the pump tightly into my body when star...