Ninety days is the number most people have heard. It has no research behind it. Neither does any other number.
The flatline has never been studied, so its duration is unknown. Recovery of arousal after heavy use has never been timed; conditioning runs in both directions and nobody knows how fast. The "rewiring" timelines attached to the dopamine story are folk theory. Every deadline you have been given is a manufactured way to feel like a failure the day after it.
What the evidence does describe is the shape. Change is a scatter plot with a trend, not a line going up. A lapse is one instance and a relapse is a return to the pattern, and what you conclude in between is the hinge: attributing a slip to a permanent flaw predicts a full return; treating it as information does not.
There is one real transition, and it is not on a calendar. It is the difference between someone who is not drinking and someone who doesn't drink: the first is engaged in ongoing resistance, the second has settled a question. That shift comes from time and from the evidence of your own behaviour, every trigger met and not acted on, accumulating until the option drops out of consideration. Self-description travels with it, though which one pulls the other is not established.
So the honest measure of progress is not days. It is distress going down, control going up, and how quickly you recover after a slip. Those move first, and they move whether or not the calendar does.
Where this comes from
Read the full lesson: From resisting to being someone →
Sources and how strong they are (4)
- AnecdotalThe "flatline" — a period of dropped libido, mood or arousal during abstinence — is consistently reported in abstinence journals and is named in the review literature, but it has never been measured prospectively or in a general population.
- Fernandez DP, Kuss DJ & Griffiths MD 2021, Arch Sex Behav 50(2):711-728, doi:10.1007/s10508-020-01858-w, PMID 33403533, PMC7889567
- Mead D & Sharpe M 2020, Int J Environ Res Public Health 17(10):3462, doi:10.3390/ijerph17103462
- Ince C, Antons S, Ashton S, Borgogna NC, Brand M, Briken P, Castro-Calvo J, Chen L, Coleman E, Efrati Y, Fernández DP, Fuss J et al. 2026, J Behav Addict 15(1):32-98, doi:10.1556/2006.2025.00337, PMID 41879870, PMC13132360
- Well establishedMarlatt's relapse-prevention model identifies the Abstinence Violation Effect: after a lapse, attributing it to a permanent personal flaw predicts a full return to the behaviour.
- Marlatt GA & Gordon JR (eds) 1985, Relapse Prevention: Maintenance Strategies in the Treatment of Addictive Behaviors, New York: Guilford Press, ISBN 0-89862-009-0
- Curry S, Marlatt GA & Gordon JR 1987, J Consult Clin Psychol 55(2):145-149, doi:10.1037/0022-006X.55.2.145
- Mixed evidenceIdentity-consistent self-description travels with habit maintenance; which one pulls the other is not established.
- Verplanken & Sui 2019, Frontiers in Psychology 10:1504, doi:10.3389/fpsyg.2019.01504, PMID 31354563
- Oyserman, Fryberg & Yoder 2007, J Pers Soc Psychol 93(6):1011-1027, doi:10.1037/0022-3514.93.6.1011, PMID 18072851
- 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
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