The erection question, answered honestly

The most-searched claim in this space, without the hype or the dismissal.

Mixed evidence 2 min read

See a doctor first. Erectile difficulty can be an early cardiovascular signal, and that is worth ruling out before anything on this page.

This is the claim that brings a lot of people here, so it deserves a straight answer rather than either the hype or the dismissal.

The case for it: a widely cited 2016 review, plus a body of clinical case reports, argued that rates of erectile difficulty and low desire in men under 40 rose after high-speed streaming video became widely available around 2006, and documented cases of men whose difficulties improved after they stopped. Some studies found men with a stronger pull toward more extreme material reported more concern about erections. Clinicians in sexual medicine report seeing this pattern.

The case against: studies that measure how often people use porn and correlate it with erectile function have not produced consistent results. Several large surveys find no clear frequency-based association. Erectile difficulty in young men has many established causes — anxiety, depression, relationship problems, cardiovascular and metabolic factors, hormones, medication — and comparisons across decades are complicated because measurement instruments and willingness to report have both changed. Some researchers regard it as a hypothesis in search of controlled evidence.

What's reasonable to conclude: conditioned arousal is a real and unremarkable phenomenon — arousal responds to what it's been paired with. It's plausible that for some people, heavy use of a very specific kind of stimulus makes a different kind of stimulus less immediately effective. That's a long way from a proven syndrome affecting everyone.

What to actually do:

  1. See a doctor. This matters more than anything else on this page and it's the step people skip out of embarrassment.
  2. Once physical causes are excluded, note that performance anxiety is extremely common, self-reinforcing, and treatable.
  3. If you want to test the porn hypothesis for yourself, a structured period without it is a reasonable personal experiment — with the honest caveat that you're an n of 1 and you'll be highly motivated to see a result.

Nobody can tell you a timeline. Anyone who does is making it up.

Takeaways

Sources and how strong they are (2)
  • Mixed evidencePorn-induced erectile dysfunction is a clinical hypothesis supported by case reports and clinician reports. Frequency-based population studies have not produced consistent associations, and the one longitudinal study to measure erectile function with a validated instrument over a year found that self-reported problematic use correlated with erectile difficulty at any single moment, that mere use did not, and that no pornography variable predicted the trajectory of erectile function. It remains contested.
    • Park BY, Wilson G, Berger J, Christman M, Reina B, Bishop F, Klam WP, Doan AP 2016, Behav Sci 6(3):17, doi:10.3390/bs6030017, PMID 27527226, PMC5039517 — carries a 2018 correction, Behav Sci 8(6):55, doi:10.3390/bs8060055, PMID 29857562, disclosing that co-author Gary Wilson is the author of Your Brain on Porn and removing the academic editor's name; see C58
    • Cuts toward an association — Jacobs T, Geysemans B, Van Hal G, Glazemakers I, Fog-Poulsen K, Vermandel A, De Wachter S, De Win G 2021, JMIR Public Health Surveill 7(10):e32542, doi:10.2196/32542, PMID 34534092, PMC8569536
    • A practitioner magazine commentary, not a peer-reviewed study — Kirby M 2021, Trends in Urology & Men's Health 12(2):6-10, doi:10.1002/tre.791
    • Grubbs JB & Gola M 2019, J Sex Med 16(1):111-125, doi:10.1016/j.jsxm.2018.11.004, PMID 30621919
    • Dwulit & Rzymski 2019, J Clin Med 8(7):914, PMID 31247949
    • Landripet & Štulhofer 2015, J Sex Med 12(5):1136-1139, PMID 25816904
    • Prause & Pfaus 2015, Sex Med 3(2):90-98, PMID 26185674
    • Not a retraction — a published Comment on Prause & Pfaus 2015: Isenberg RA 2015, Sex Med 3(3):219-221, doi:10.1002/sm2.71
  • Mixed evidencePark et al. 2016 argue that rates of erectile difficulty and low desire in men under 40 appear higher in studies published after 2006, when the first internet video tube sites appeared, than in earlier ones. That comparison rests on that paper alone. Causation is not established and measurement differs across studies. Separately, a 2025 narrative review reports that recent studies find rising erectile-dysfunction prevalence among younger men, without the 2006 cut-point and without any low-desire trend.
    • Park BY, Wilson G, Berger J, Christman M, Reina B, Bishop F, Klam WP, Doan AP 2016, Behav Sci 6(3):17, doi:10.3390/bs6030017, PMID 27527226, PMC5039517 — carries a 2018 correction, Behav Sci 8(6):55, doi:10.3390/bs8060055, PMID 29857562, disclosing that co-author Gary Wilson is the author of Your Brain on Porn and removing the academic editor's name; see C58
    • Supports only the general trend in younger men, not the 2006 cut-point and not low desire — Safa A & Waked C 2025, Cureus 17(8):e89918, doi:10.7759/cureus.89918, PMID 40809937, PMC12349891

Questions this lesson answers

More evidence in the app.

The full 41-lesson course is in the app, and every claim in it is graded the same way as the ones you just read. Free.

Coming to iOS and Android.

Get Nightshore
← When it's not workingRecalibrating arousal →