Based on the best available evidence, masturbation does not directly lower cortisol levels. A controlled crossover study published in Basic and Clinical Andrology measured salivary cortisol in young men before, during, and after masturbation to orgasm and found no statistically significant change compared to simply sitting passively or watching a visual stimulus without physical activity. The cortisol curves were essentially identical across all three conditions.
That said, the relationship between sexual activity and stress hormones is more nuanced than a single lab measurement can capture. Here’s what the research actually shows.
What Happens to Hormones After Orgasm
Sexual arousal and orgasm trigger a recognizable hormonal cascade, but cortisol isn’t a major player in it. The hormones that shift most reliably are prolactin (which rises sharply after orgasm), oxytocin (which surges during arousal then drops after climax), and dopamine (which also falls post-orgasm). Endorphins are released as well. This combination produces the familiar feeling of relaxation and sleepiness that follows orgasm.
The post-orgasm prolactin spike is particularly important. It acts as a brake on the dopamine-driven arousal system, creating a sense of satiety and reduced tension. That feeling of relief is real and measurable, but it’s driven by the prolactin-dopamine interaction rather than by any drop in cortisol. Prolactin essentially tells the brain “you’re done,” which contributes to the calm, satisfied state many people experience.
Why It Feels Like Stress Relief
If cortisol doesn’t budge, why does masturbation often feel stress-relieving? The answer likely comes down to the subjective experience of relaxation versus what’s happening at the hormonal level. Endorphins act as natural painkillers and mood boosters. Oxytocin, even though it drops after orgasm, promotes feelings of calm during arousal. The physical release of muscle tension, the shift in attention away from stressors, and the post-orgasm drowsiness all contribute to a genuine sense of reduced stress without necessarily requiring a cortisol change.
There’s also a timing distinction worth understanding. A daily diary study tracking both sexual activity and salivary cortisol found that previous sexual activity was associated with lower cortisol levels at the next measurement point. This suggests that while a single session may not cause an immediate, measurable cortisol drop, a pattern of regular sexual activity may correlate with lower stress hormone levels over time. Whether that’s because sex reduces stress or because less-stressed people have more sex (or both) remains an open question.
Gender Differences in the Stress-Sex Connection
The relationship between stress and sexual activity appears to differ between men and women. Research tracking daily fluctuations found that higher cortisol levels were more strongly linked to lower sexual desire in women than in men. On the flip side, sexual arousal was more strongly associated with lower subjective stress in women than in men. So while the direct cortisol-lowering effect of masturbation hasn’t been demonstrated in either sex, women may experience a more pronounced sense of stress relief from sexual arousal and desire. Most controlled hormonal studies have been conducted in men, leaving a significant gap in what we know about female-specific cortisol responses to masturbation.
Solitary vs. Partnered Sex
One consistent finding across studies is that partnered intercourse produces a larger prolactin response than masturbation alone. The prolactin surge after intercourse can be up to 400% greater than after solo masturbation. Researchers interpret this as reflecting greater physiological arousal and more complete sexual satiety during partnered sex, possibly due to touch, emotional connection, or simply a more intense physical experience. Since prolactin is the hormone most closely tied to post-orgasm relaxation, this could mean partnered sex delivers a stronger sense of calm afterward, even though neither activity appears to directly alter cortisol.
The controlled study that measured cortisol specifically during masturbation did not include a partnered-sex comparison arm, so direct cortisol data for intercourse versus masturbation in the same participants doesn’t yet exist.
What This Means for Stress Management
If you’re masturbating specifically to lower cortisol, the evidence doesn’t support that as a reliable mechanism. Your cortisol levels are primarily governed by your circadian rhythm (peaking in the morning and dropping at night) and your body’s response to perceived threats and stressors. A single session of masturbation doesn’t appear to override that system.
That doesn’t mean masturbation is useless for stress. The endorphin release, muscle relaxation, and mental distraction are legitimate stress-relief mechanisms that operate through different pathways than cortisol. Many people find that masturbating before sleep helps them fall asleep faster, which indirectly supports healthy cortisol patterns since poor sleep is one of the most potent cortisol elevators. The relaxation is real; it just works through neurochemistry other than cortisol suppression.
Activities with strong evidence for directly lowering cortisol include aerobic exercise (which paradoxically raises cortisol during the activity but lowers baseline levels over time), meditation, and consistent sleep hygiene. If cortisol reduction is your specific goal, those interventions have more robust data behind them.