Low sex drive is one of the most common sexual health concerns, and it rarely has a single cause. Desire is shaped by a mix of hormones, sleep, physical activity, stress, medications, and relationship dynamics. The good news is that most of these factors respond to specific, practical changes. Here’s what actually moves the needle.
Understand What Drives Desire
Sexual desire isn’t just a mood. It’s a product of your brain balancing two competing systems: one that accelerates arousal and one that suppresses it. Researchers call this the Dual Control Model. Your “accelerators” are things like attraction, novelty, feeling desired, and physical touch. Your “brakes” are things like stress, fear of performance failure, relationship tension, body image concerns, and feeling unsafe or distracted.
Most people with low libido don’t have a broken accelerator. They have a brake that’s stuck on. Chronic work stress, unresolved conflict with a partner, anxiety about sexual performance, or simply being mentally exhausted can keep that brake pressed down no matter how many candles you light. Identifying which brakes are active in your life is often more effective than trying to force more excitement into the mix.
Check Your Hormones
Testosterone is the primary hormone behind sexual desire in both men and women. The American Urological Association defines low testosterone in men as below 300 ng/dL, with a healthy range between 450 and 600 ng/dL. For premenopausal women, normal testosterone falls between 10 and 55 ng/dL. After menopause, that range drops to 7 to 40 ng/dL.
Testosterone levels decline naturally with age, but that decline doesn’t have to tank your sex drive. What matters more is whether your levels have dropped below the threshold where desire, energy, and arousal start to suffer. Signs of low testosterone include reduced interest in sex, fewer spontaneous erections, fatigue, and difficulty with arousal. A simple blood test can confirm where you stand, and it’s worth requesting one if your libido has dropped significantly without an obvious explanation.
Women produce roughly three times more testosterone than estrogen before menopause, which means testosterone plays a larger role in female desire than many people realize. When estrogen drops during menopause, the hormonal balance shifts, and desire often changes with it. Hormone-related changes in libido aren’t something you just have to live with. They’re treatable.
Move Your Body, but Don’t Overdo It
Exercise is one of the most reliable ways to boost sex drive. Research consistently shows that people who exercise at moderate levels have significantly higher sexual desire than sedentary people. In one large study, men in the lowest exercise group had markedly lower sex drive, weaker erections, and worse ejaculatory function compared to every group above them. Moving from sedentary to moderately active produced the biggest jump in what researchers call “dyadic sexual desire,” which is desire directed toward another person.
There’s a catch, though. Very high volumes of intense endurance exercise, think heavy marathon training or multiple hours of high-intensity cardio daily, can suppress testosterone and actually reduce libido. The sweet spot appears to be regular moderate exercise: strength training, brisk cardio, or a mix of both, done consistently but not obsessively. If you’re sedentary, even modest increases in activity can make a noticeable difference within weeks.
Protect Your Sleep
Sleep deprivation directly lowers testosterone. A meta-analysis of the available research found that going 24 hours or more without sleep produces a significant drop in testosterone levels. Staying awake for 40 to 48 hours makes that drop even steeper. The effect is clear and measurable.
Interestingly, partial sleep restriction over a short period, sleeping five or six hours instead of eight for a few nights, didn’t produce a statistically significant testosterone drop in pooled data. But that doesn’t mean poor sleep habits are harmless. Chronic sleep debt accumulates, and fatigue alone suppresses desire through those “brake” mechanisms: irritability, low energy, and reduced emotional bandwidth. Consistently getting seven to nine hours gives your hormones the best chance of staying in a healthy range and keeps your brain in a state where desire can actually surface.
Review Your Medications
Some of the most commonly prescribed medications in the world suppress sex drive as a side effect. SSRIs, a class of antidepressants that includes fluoxetine and sertraline, are the most well-known culprits. Studies estimate that anywhere from 36% to 63% of people taking these medications experience some form of sexual dysfunction, including decreased desire, difficulty with arousal, or trouble reaching orgasm. The range is wide because sexual side effects are underreported and depend heavily on how the question is asked.
Other medications that can dampen libido include certain blood pressure drugs, hormonal birth control, antihistamines, and some anti-seizure medications. If your sex drive dropped around the time you started a new prescription, that connection is worth exploring with your prescriber. Alternatives or dosage adjustments exist for many of these drugs. Don’t stop any medication on your own, but don’t assume a dead libido is just something you need to accept either.
Address Stress and Relationship Friction
Stress is one of the most powerful brakes on sexual desire. Your brain evolved to suppress interest in sex when it perceives ongoing threats, whether that’s a dangerous environment, social pressure, or the modern equivalent: an overflowing inbox and financial anxiety. Chronic stress elevates cortisol, which interferes with testosterone signaling and keeps your nervous system in a state that’s incompatible with arousal.
Relationship quality matters just as much. One of the two major inhibition factors identified in sexual response research is tied specifically to threats within the sexual relationship itself: unresolved resentment, feeling criticized, lack of emotional safety, or a pattern of rejection. These aren’t just mood killers. They activate a neurological braking system that dampens desire at the biological level. For many couples, improving communication or working through conflict with a therapist does more for their sex life than any supplement or hormone ever could.
Consider Supplements Carefully
Maca root is the most studied natural supplement for sexual desire, and it has some legitimate evidence behind it. In healthy men taking 1.5 to 3 grams daily, self-reported desire increased by about 24% at four weeks and over 40% by eight to twelve weeks. A separate trial using 2 grams of a concentrated maca extract for just two weeks found improved scores on a validated desire questionnaire, with the biggest gains in desire directed toward a partner.
Perhaps most usefully, maca has shown promise for people dealing with antidepressant-related sexual dysfunction. In a 12-week trial of depressed patients on SSRIs, both 1.5g and 3g daily doses improved sexual function scores, with the higher dose performing better. Maca appears to work independently of hormones, since studies haven’t found it changes testosterone or estrogen levels directly.
Other supplements marketed for libido, like tribulus terrestris, fenugreek, and DHEA, have thinner evidence. Some show modest effects in specific populations, but none match the consistency of maca’s data. Approach supplement claims skeptically, and prioritize the lifestyle factors above, which have stronger and more reliable effects.
When Low Desire Becomes a Diagnosis
Persistent low desire that causes significant personal distress has a clinical name: hypoactive sexual desire disorder, or HSDD. For women, the current diagnostic framework requires symptoms to persist for at least six months and cause marked distress or interpersonal difficulty. Crucially, the low desire can’t be better explained by another condition, a medication side effect, or relationship problems. It has to be its own issue.
For women diagnosed with HSDD, there is one FDA-approved daily medication that works on brain chemistry rather than hormones. In clinical trials, it resulted in roughly one-half additional satisfying sexual event per month compared to placebo. That may sound modest, but for someone experiencing almost no desire at all, it represents a meaningful shift. The medication needs to be taken daily at bedtime and requires avoiding alcohol. A second option is a self-administered injection taken before anticipated sexual activity. Both are prescription-only and intended for premenopausal women, though off-label use exists.
For men, testosterone replacement therapy is the primary medical treatment when blood levels confirm a deficiency. It’s effective for restoring desire when low testosterone is the root cause, but it comes with tradeoffs including potential impacts on fertility and cardiovascular risk that need to be weighed individually.
Putting It All Together
Raising your sex drive is rarely about finding one magic fix. It’s about systematically removing the things suppressing it while strengthening the things that support it. Start with the basics: sleep, exercise, and stress. Check whether any medications are working against you. Look honestly at your relationship dynamics. Get your hormones tested if the basics don’t explain what’s going on. Supplements like maca can provide a modest additional boost, but they work best on top of a solid foundation rather than as a replacement for one.