Low sex drive is one of the most common sexual concerns for both men and women, and it rarely has a single cause. Hormones, sleep, stress, medications, and psychological patterns all feed into desire. The good news is that most of these factors respond to concrete, everyday changes.
Why Stress Kills Desire First
When your body is under chronic stress, it ramps up cortisol production. Cortisol directly suppresses the hormonal system responsible for producing sex hormones like testosterone and estrogen. This isn’t a subtle effect. Your brain essentially deprioritizes reproduction when it perceives ongoing threat, whether that threat is a demanding job, financial pressure, or relationship conflict.
This means stress reduction isn’t just a nice-to-have; it’s one of the most effective levers you can pull. Mindfulness practice has some of the strongest evidence behind it. In a clinical trial, women who completed four 90-minute group sessions combining mindfulness meditation with cognitive therapy saw significant improvements in sexual desire, arousal, satisfaction, and overall sexual functioning compared to a control group. The mechanism is straightforward: mindfulness builds the ability to stay present during sexual experiences instead of drifting into anxious or self-critical thoughts. It trains you to treat distracting thoughts as mental events rather than facts that need to be believed and pursued, letting you redirect attention to physical sensation instead.
You don’t need a formal program to start. Even 10 to 15 minutes of daily meditation, body scans, or breathing exercises can begin lowering baseline cortisol and rebuilding the mental space that desire needs to emerge.
Sleep Is Non-Negotiable
Just one week of getting only five hours of sleep per night drops testosterone levels by 10 to 15 percent in healthy young men. That’s a substantial hit from something many people treat as normal. Testosterone plays a role in desire for all genders, and chronic sleep deprivation compounds the problem over time by also raising cortisol and impairing mood.
If you’re consistently sleeping under six hours and wondering why your sex drive has vanished, sleep is the first thing to fix. Aim for seven to nine hours. Prioritize a consistent wake time, limit screens in the hour before bed, and keep your bedroom cool and dark. These basics sound obvious, but they often produce noticeable changes in energy and desire within a couple of weeks.
How Exercise Affects Desire
Regular physical activity improves blood flow, reduces stress hormones, boosts mood, and increases body confidence. All of these feed into sexual desire. The type of exercise matters, though, and the research is more nuanced than the typical “hit the gym” advice suggests.
In women, aerobic exercise (running, cycling, swimming) tends to raise testosterone levels, while resistance training does not produce the same hormonal bump. For men, both resistance and aerobic training support healthy testosterone over time, though the acute hormonal spikes from a single workout are temporary. The bigger benefit of exercise is cumulative: better cardiovascular health, improved sleep, lower anxiety, and a more positive relationship with your body. Aim for at least 150 minutes of moderate activity per week, mixing cardio and strength work based on what you enjoy enough to sustain.
The Testosterone Question
Testosterone is central to libido in both men and women, but the relationship between levels and desire is murkier than most people assume. There’s no clean cutoff where desire switches off. In one large study of aging men, about 37 percent of those with total testosterone below 300 ng/dL reported low libido, but that means the majority did not. And among all men who reported low libido, only about 23 percent actually had testosterone below that threshold. Low desire is common even with normal hormone levels, and normal desire is common even with lower hormones.
That said, if your testosterone is genuinely low (your doctor can check with a simple blood draw), addressing it can make a real difference. For men, this might mean hormone replacement therapy. For women, the picture is more complex, as estrogen, progesterone, and testosterone all interact with desire, and levels shift dramatically during menstrual cycles, postpartum, perimenopause, and menopause. If you suspect a hormonal issue, getting tested gives you a concrete starting point rather than guessing.
Medications That Lower Libido
Certain antidepressants, particularly SSRIs and SNRIs, are well known for blunting sexual desire, arousal, and orgasm. These side effects are likely underreported, meaning the true prevalence is higher than clinical estimates suggest. In some cases, sexual side effects can persist even after stopping the medication, though this appears to be rare.
Other common culprits include hormonal birth control, blood pressure medications, anti-seizure drugs, and opioids. If your sex drive dropped noticeably after starting a new medication, that connection is worth exploring with your prescriber. Often there are alternative medications or dosage adjustments that preserve the therapeutic benefit while reducing sexual side effects. Don’t stop any medication on your own, but do bring it up. Many people assume low desire is “just how they are” when a medication change could resolve it.
Supplements: What the Evidence Shows
Most supplements marketed for libido have weak or nonexistent evidence. Maca root is one of the few with credible clinical trial data. In a randomized, double-blind, placebo-controlled trial, men taking approximately 5 grams of maca daily showed significant improvement in symptoms associated with low testosterone (including reduced desire) after 12 weeks. The placebo group improved initially but plateaued, while the maca group continued to improve. Effects began appearing around week four but became clearly distinct from placebo by week twelve.
Maca is not a magic fix, and 5 grams daily is a meaningful dose (six capsules in the trial). But if you’re looking for a supplement with actual human trial data behind it, maca has more support than most alternatives. Other commonly promoted options like tribulus terrestris, fenugreek, and ashwagandha have far less rigorous evidence for direct libido effects, though ashwagandha may help indirectly through stress reduction.
Relationship and Psychological Factors
Desire doesn’t exist in a vacuum. For people in relationships, emotional disconnection, unresolved conflict, lack of novelty, and feeling more like roommates than partners are among the most common reasons sex drive fades. These aren’t failures; they’re predictable patterns in long-term relationships. Addressing them directly, whether through honest conversations, scheduled intimacy (which sounds unsexy but works for many couples), or couples therapy, often does more than any supplement or lifestyle change.
Body image also plays a significant role. Feeling unattractive or self-conscious during sex pulls your attention away from arousal and toward judgment, creating a feedback loop that suppresses desire over time. This is the same mechanism that mindfulness targets: learning to stay in physical sensation rather than spiraling into evaluative thoughts.
When Low Desire Becomes a Clinical Concern
There’s an important distinction between a dip in sex drive caused by life circumstances and a clinical condition. The diagnostic criteria for sexual interest disorders require that reduced desire persists for at least six months, causes significant personal distress, and isn’t fully explained by relationship problems, another mental health condition, medication effects, or a medical issue.
That last point matters. If your low desire traces clearly to sleep deprivation, a stressful job, or a new medication, it’s not a disorder. It’s a signal. The clinical label applies when desire remains absent even after those factors are addressed. If you’ve worked through the lifestyle basics and nothing has shifted after several months, a healthcare provider who specializes in sexual health can help identify whether something deeper, hormonal, neurological, or psychological, is at play.