Dr Alan Mandell said ‘too much sexual stimulation is not good’ and could lead to erectile dysfunction
Dr. Alan Mandell, known as the Motivational Doctor online, has been active on social media discussing the negative effects of consuming excessive amounts of adult films and frequent masturbation.
He warns that such habits could eventually lead to difficulties in achieving or maintaining an erection.
He explains that this can cause a person with a penis to struggle with getting or keeping a firm erection necessary for satisfactory sexual activity.
“And eventually, you will get desensitized to sexual stimulation. So when you start cutting out porn and masturbating you will see significant results.”

This perspective is supported by other medical professionals as well.
How adult film consumption can impact the brain:
Regarding how adult film consumption impacts the brain, HealthMatch indicates that erectile dysfunction could indeed be ‘porn-induced’ (PIED).
It mentions that ‘several studies’ have identified ‘a link between compulsive pornography use and reduced sex drive and/or ED’.

Some experts believe that too much exposure to adult films can make viewers ‘desensitized to real-life sex’, resulting in someone’s ‘real-life partnered sex no longer meet[ing]’ the expectations set by porn consumption.
But just how widespread is this issue?
The debate and scale of the issue:
HealthMatch reports erectile dysfunction can indeed be ‘porn-induced’ (PIED) and that ‘several studies’ have found ‘a link between compulsive pornography use and reduced sex drive and/or ED’.
According to the site, approximately 30 million men in the US are currently experiencing this condition.

Very Well Health notes that about 40 percent of erectile dysfunction cases are considered psychogenic, meaning they stem from psychological factors that affect the ability to achieve or maintain an erection during sex.
Support:
So, if you’re experiencing difficulties with getting or maintaining an erection, it might be worth examining your consumption of adult content.
Consulting with a mental health professional or a doctor could help you understand the underlying issues.