Are My ED Problems Porn-Induced or From Propecia?

What is the longest time Propecia side effects can appear? I been on Propecia for almost 4 years and within the past several months I got ED when I have sex I can’t even get an erection to penetrate but when I masturbate to porn I can maintain a strong erection! After enough research I’m almost positive I got porn-induced ED! So now I’m in the process of recovery but since I’m on Propecia, I wonder now if possibly that after such a long time side effects could appear!

Propecia has halted my hair loss and I don’t wanna stop it. I’m 25yo it’s too early for me to be bald!

Side effects from any drug can appear at any time, but this is relatively rare. Most side effects would appear in the first few weeks — not after 4 years. If you think Propecia is causing your erectile dysfunction (ED), talk with your prescribing doctor and consider stopping the medication or cutting the dosage. If you think porn is causing your ED, stop watching porn or talk with your psychologist. I really have no way to know what is causing your erection troubles.

Here are some ED statistics that might be interesting to you (source: MMHC) —

• One in 10 men in the world have erectile dysfunction.
• 30 million men in the United States have erectile dysfunction.
• 50% of men with diabetes have erectile dysfunction, frequently within 10 years of diagnosis.
• The likelihood of erectile dysfunction increases with age: 39% at age 40, 65% over the age of 65.
• Smokers have a higher likelihood of erectile dysfunction. Men who smoke more than 1 pack per day have a 50% higher chance of impotency than nonsmokers the same age.