If you stop masturbating, your body will go through some measurable changes, but most of them are smaller and more temporary than the internet suggests. Testosterone doesn’t permanently rise, your health doesn’t dramatically improve, and you won’t gain superhuman focus. What does happen is a mix of minor hormonal fluctuations, shifts in sperm quality, and some potential tradeoffs worth understanding.
What Happens to Testosterone
The most widely repeated claim is that abstaining from ejaculation causes a significant testosterone increase. This comes from a single study of 28 men, published in 2003 and later retracted (not for bad methodology, but because the authors had published the same data elsewhere). That study found testosterone levels stayed essentially flat from days two through five of abstinence, then briefly spiked to about 145% of baseline on day seven. After that one-day peak, levels dropped back to normal and stayed there, even when participants continued abstaining for another week.
That brief spike is real but misleading if you interpret it as a lasting boost. Continuous abstinence beyond day seven produced no further increase. A few other studies have found either no testosterone effect from abstinence at all, or that testosterone was actually slightly higher after masturbation or sex. In practical terms, stopping masturbation is unlikely to give you a meaningful, sustained change in testosterone levels.
Effects on Sperm Quality
If fertility is on your mind, abstinence length matters, but not in a straightforward “more is better” way. The World Health Organization recommends two to seven days of abstinence before a semen analysis, while the European Society of Human Reproduction and Embryology narrows that window to three to four days for the best balance of sperm count and quality.
A large cross-sectional study of over 3,000 men found that going longer than seven days without ejaculating increased sperm concentration but reduced the percentage of sperm that could actually swim effectively. It also raised DNA fragmentation, a measure of genetic damage in sperm cells. On the flip side, ejaculating too frequently (less than one day apart) lowered semen volume and total sperm count. The sweet spot appears to be around three to four days between ejaculations. If you stop masturbating entirely and aren’t having sex, your sperm will accumulate, but the older sperm sitting in storage gradually lose quality.
Prostate Health Over Time
One of the more significant findings relates to long-term prostate cancer risk. A large Harvard study found that men who ejaculated 21 or more times per month had a 31% lower risk of prostate cancer compared to men who ejaculated four to seven times per month. This was measured across participants’ lifetimes, so it reflects a sustained pattern rather than a short experiment.
The mechanism isn’t fully understood, but one theory is that regular ejaculation helps flush out potentially carcinogenic substances from the prostate gland. Stopping masturbation entirely, especially if you’re not sexually active otherwise, means fewer total ejaculations per month and potentially missing out on that protective effect over years and decades.
Sleep and Relaxation
Orgasm triggers a cocktail of hormones that promote relaxation and sleepiness. Your body releases oxytocin (involved in bonding and calm), prolactin (linked to satisfaction and drowsiness), endorphins, and other compounds that help regulate your brain’s stress-response system. Oxytocin in particular plays a role in modulating the hormones that control sleep onset.
If you currently masturbate before bed as part of your wind-down routine, stopping may make it harder to fall asleep initially. This isn’t a dramatic effect for most people, but if you already struggle with sleep, it’s worth considering. The relaxation response from orgasm is genuine and well-documented, even if the exact time-to-sleep difference varies from person to person.
Stress and Mood
Masturbation to orgasm triggers the release of endocannabinoids, your body’s own cannabis-like molecules that play a role in pleasure and stress regulation. One study measuring blood levels before and after orgasm found a significant increase in one key endocannabinoid. Interestingly, cortisol (the primary stress hormone) was not significantly changed by masturbation in that same study, suggesting the stress-relief feeling comes more from the pleasure and relaxation side than from directly lowering stress hormones.
What this means practically: if masturbation is one of your go-to ways to decompress, stopping removes that tool from your toolkit. You won’t experience a buildup of stress hormones from abstaining, but you will lose one source of the feel-good compounds your body produces during orgasm. Some people find other outlets (exercise, meditation) fill this gap easily. Others notice increased irritability or tension, particularly in the first few weeks.
Immune Function
A study of 112 college students found that those who had sexual activity one to two times per week showed significantly higher levels of immunoglobulin A, an antibody that serves as your first line of defense against infections in your mucous membranes (nose, throat, gut). People who had sex less than once a week, not at all, or three or more times per week all had comparable, lower levels. The relationship appears to follow a curve rather than a straight line: moderate frequency is associated with the strongest immune marker levels, while both extremes are not.
What Most People Actually Experience
The “NoFap” community reports benefits like increased energy, sharper focus, and greater confidence. Some of these experiences are real, but the mechanism is likely psychological rather than hormonal. If someone has been using masturbation compulsively as an avoidance behavior, or spending hours watching pornography, stopping that pattern frees up time and mental energy. The benefit comes from breaking the compulsive cycle, not from semen retention itself.
For someone who masturbates a few times a week without it interfering with their life, stopping is unlikely to produce noticeable cognitive or physical benefits. You may experience more spontaneous erections and heightened arousal in the first week or two as your body adjusts, and some people report vivid dreams during that period. These effects tend to level off as your body recalibrates.
The most honest summary: stopping masturbation won’t hurt you, but the evidence for dramatic benefits is thin. The clearest downsides of long-term abstinence are reduced sperm quality if you’re trying to conceive and potentially missing the modest protective effect against prostate cancer that comes with regular ejaculation. The clearest upside is breaking a pattern that feels compulsive or time-consuming, if that applies to you.