The claim usually arrives bundled with the erection question, and the evidence has the same shape: suggestive at the level of clinics and case reports, inconsistent at the level of population studies.
What has been observed is that post-2006 studies report higher rates of low desire and erectile difficulty in younger men than pre-internet-video studies did. What has not been shown is that porn caused the change. The instruments differ, willingness to report has changed, and a shift in the numbers between two eras is not the same thing as a mechanism.
What is well established is narrower and more useful: arousal is conditioned. It responds to what it has repeatedly been paired with, and that runs in both directions. If a specific kind of stimulus has become the only thing that reliably works, that is a habit, not damage, and habits recalibrate. How long that takes has never been measured.
Two practical points. A drop in desire during a change of habits is commonly reported and is not evidence something is wrong with you. A drop that persists, or that comes with two weeks of not caring about anything, is its own problem and wants a GP rather than a forum.
Where this comes from
Read the full lesson: Recalibrating arousal →
Sources and how strong they are (3)
- Mixed evidenceRates of erectile difficulty and low desire in men under 40 appear higher in post-2006 studies than in pre-internet-video ones, but causation is not established and measurement differs across studies.Park et al. 2016; Erectile Dysfunction in Young Adults narrative review 2025
- Mixed evidencePorn-induced erectile dysfunction is a real clinical hypothesis with supportive case reports and clinician reports, but frequency-based population studies have not produced consistent associations. It remains contested.Park et al. 2016; JMIR 2021 international survey; Kirby 2021
- AnecdotalThe "flatline" — a period of dropped libido, mood or arousal during abstinence — is consistently reported in abstinence journals but has never been formally studied.Fernandez et al. 2021
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