Difficulty reaching orgasm during partnered sex is more common than most people realize, and it almost always has an identifiable cause. Roughly 10% of sexually active men report trouble climaxing, with rates climbing significantly after age 50. The reasons fall into a few major categories: medications, masturbation habits, hormonal imbalances, psychological factors, and sometimes a combination of several at once. The good news is that most of these causes are treatable or reversible.
Antidepressants Are the Most Common Cause
If you take an SSRI antidepressant, start there. In one analysis of over 200 patients with delayed orgasm, 42% of cases were linked to SSRI use. These medications work by increasing serotonin levels in the brain, which improves mood but also suppresses the nerve signaling involved in orgasm. A large study found that people taking SSRIs had a seven-fold increased risk of delayed orgasm and a two-fold risk of low desire.
The numbers are striking across specific medications. Paroxetine causes sexual dysfunction in about 71% of users, citalopram in 73%, and sertraline in 63%. In one study comparing SSRIs to bupropion (a different type of antidepressant), 73% of SSRI users reported sexual side effects compared to just 14% on bupropion. If you suspect your medication is the issue, talk to your prescriber about switching to an alternative with a lower rate of sexual side effects, such as bupropion or mirtazapine. Do not stop taking antidepressants abruptly.
Other medications that can block orgasm include antipsychotics and opioid painkillers, both prescription and recreational.
Masturbation Habits Can Retrain Your Body
Your body learns to orgasm from whatever stimulus you give it most often. If you masturbate frequently with a tight grip, fast speed, or a very specific technique, your penis gradually becomes desensitized to anything that doesn’t replicate that exact pattern. This is sometimes called “death grip syndrome,” and it creates a situation where the lighter, more variable stimulation of partnered sex simply isn’t enough to push you over the edge.
This sets up a cycle: as sensitivity decreases, you grip harder or go faster to compensate, which further narrows the range of stimulation that works. Over time, that one specific technique becomes the only way you can finish. The fix involves deliberately retraining your response. Sex therapists recommend switching hands, loosening your grip, changing positions, and gradually shifting toward stimulation that more closely resembles what you’d feel during sex with a partner. Some clinicians suggest using a condom during masturbation to reduce friction and force your body to adapt to less intense sensation.
Reducing frequency matters too. A common clinical recommendation is to avoid orgasm for at least 72 hours before partnered sex, giving your body a chance to respond to a lower threshold of stimulation.
Performance Anxiety Pulls You Out of the Moment
Orgasm requires a certain level of mental immersion in what’s happening physically. When anxiety takes over, your brain shifts from processing erotic cues to monitoring and evaluating your own performance. Psychologists call this “spectatoring,” where you essentially watch yourself from a third-person perspective during sex, judging how you’re doing instead of feeling what’s happening.
This creates a feedback loop. Performance anxiety triggers a shift in attention away from pleasure and toward threat (the fear of failure). That shift suppresses arousal, which confirms your worry that something is wrong, which increases anxiety further. Over time, you may start avoiding sexual situations altogether or mentally checking out during them.
The pattern often starts with a single experience of not being able to finish, which plants the seed of worry for the next encounter. Relationship tension, body image concerns, pressure to perform, or guilt about sex can all fuel it. Addressing this usually requires consciously redirecting attention back to physical sensations rather than thoughts about outcomes.
Hormonal Imbalances Worth Checking
Low testosterone was the second most common cause identified in clinical research, accounting for about 21% of delayed orgasm cases. Testosterone levels naturally decline with age, but levels can drop below normal at any point due to stress, poor sleep, obesity, or pituitary gland issues. If you’re also experiencing low energy, reduced sex drive, or difficulty maintaining erections, low testosterone is worth investigating with a simple blood test.
High prolactin is another hormonal culprit. Prolactin is a hormone produced by the pituitary gland, and when levels get too high, it suppresses both testosterone production and sexual function. Mildly elevated prolactin usually doesn’t cause problems, but levels above about 35 ng/mL can significantly impair orgasm and erection. High prolactin is sometimes caused by a small, benign tumor on the pituitary gland, which is treatable with medication. Hypothyroidism (an underactive thyroid) can also play a role.
Age, Nerve Sensitivity, and Pelvic Muscles
Penile sensitivity naturally decreases with age. Research tracking sensation thresholds across age groups consistently shows that older men need more stimulation to reach the same level of arousal. This is partly why about 6% of men over 50 report ejaculatory difficulty. Conditions like diabetes or multiple sclerosis can accelerate nerve damage and compound the issue.
Your pelvic floor muscles are directly involved in ejaculation. The bulbocavernous and ischiocavernous muscles contract rhythmically during orgasm, acting like a pump that propels semen forward. If these muscles are chronically tight (hypertonic) or weak, the ejaculatory reflex can be disrupted. Interestingly, research shows that intentional relaxation of these muscles during arousal can actually inhibit ejaculation, which means chronic tension in the pelvic floor from stress, prolonged sitting, or habitual clenching may interfere without you realizing it.
Alcohol and Nicotine Slow Things Down
Alcohol is a central nervous system depressant. In small amounts it can reduce inhibition, but beyond a drink or two it dulls nerve signaling throughout the body, including the genital nerves needed for orgasm. If you notice the problem is worse after drinking, that’s likely a direct contributor.
Nicotine works differently but with a similar result. It constricts blood vessels by activating the sympathetic nervous system (your fight-or-flight response) and disrupts the production of nitric oxide, a chemical your body uses to increase blood flow to the genitals during arousal. Research has shown that nicotine significantly reduces physiological sexual arousal, and this effect occurs even in people who don’t regularly smoke. If you use nicotine in any form, it’s worth considering how it might be affecting your sexual response.
What Actually Helps
The approach depends on the cause, but several strategies work across categories. If medications are involved, a switch to a different class of antidepressant can make a dramatic difference. If masturbation habits are the issue, the retraining process typically takes a few weeks of consistent effort: less frequency, looser grip, different positions, and gradually bridging toward partnered stimulation.
For psychological causes, sex therapists use a technique called sensate focus, which involves temporarily removing orgasm as a goal and instead focusing purely on physical sensation during intimacy. This breaks the spectatoring cycle by eliminating the performance pressure that feeds it. Therapists also encourage men who tend to prioritize their partner’s pleasure at the expense of their own to give themselves permission to move in ways that feel good for them, rather than performing.
Fantasizing during partnered sex is not a failure. Clinicians actively recommend using mental imagery or erotica to block intrusive, anxiety-driven thoughts that pull you out of the moment. The goal is to increase immersion in arousal rather than fighting against distraction through willpower alone.
If none of the obvious causes apply, a blood test checking testosterone and prolactin levels is a reasonable next step. Both are straightforward to measure and, if abnormal, straightforward to treat.