Low libido is one of the most common sexual health concerns for both men and women, and it rarely has a single cause. Sexual desire is driven by a mix of hormones, brain chemistry, sleep quality, stress levels, and relationship dynamics. The good news is that most of these factors respond well to specific, practical changes. Here’s what actually works.
How Your Body Regulates Sexual Desire
Understanding the basics helps you target the right fix. In men, testosterone is the primary driver of sexual desire, working alongside dopamine and nitric oxide pathways to fuel both motivation and physical arousal. Women rely on testosterone too, though in smaller amounts, and its effects are shaped by fluctuating estrogen levels throughout the menstrual cycle. Estrogen promotes genital sensitivity and blood flow, while progesterone can suppress desire during the second half of the cycle.
Dopamine, the brain’s reward chemical, plays a major role in both sexes. It activates the brain’s reward pathways during early arousal, creating that feeling of wanting and anticipation. Anything that blunts dopamine signaling, whether chronic stress, poor sleep, or certain medications, can quietly erode your sex drive over time.
Sleep Is More Important Than You Think
If you’re getting fewer than six hours of sleep, that alone could be the problem. A study from the University of Chicago found that healthy young men who slept only five hours per night saw their testosterone levels drop by 10 to 15 percent after just one week. That’s a significant hormonal shift from something most people dismiss as a minor inconvenience. For women, sleep deprivation raises cortisol and disrupts the hormonal balance that supports desire. Prioritizing seven to nine hours of consistent sleep is one of the simplest and most effective interventions for low libido.
Exercise Helps, but More Isn’t Always Better
Regular physical activity reliably boosts sexual desire. Compared with sedentary people, those who exercise consistently have higher testosterone levels, greater libido, and better overall sexual function. Resistance training in particular supports healthy hormone production in both men and women.
There’s a catch, though. Excessive endurance exercise can backfire. A study of male endurance athletes (runners, cyclists, and triathletes) found that the low libido group contained three times as many intense, prolonged exercisers compared to those training at moderate levels. Among those with reduced sex drive, 65 percent were exercising more than 10 hours per week. In women, chronic high-volume endurance training can disrupt the hormonal axis enough to affect menstrual cycles, fertility, and desire. The sweet spot is regular moderate exercise, including strength training, without pushing into chronic overtraining territory.
What You Eat Matters Over Time
Diet won’t transform your libido overnight, but eating patterns have a measurable long-term effect on sexual function. In a randomized clinical trial following 215 men and women over eight years, those who followed a Mediterranean diet experienced significantly less decline in sexual function compared to those on a standard low-fat diet. The Mediterranean pattern, rich in vegetables, olive oil, fish, nuts, and whole grains, supports cardiovascular health and blood flow, both of which are essential for arousal.
Specific nutrient gaps can also contribute to low desire. Zinc plays a role in testosterone production, and even mild deficiency can affect sexual health. Men need about 11 milligrams daily, and women need about 8 milligrams. Good sources include oysters, red meat, pumpkin seeds, and chickpeas.
Manage Stress Directly
Chronic stress is one of the most common and underestimated libido killers. Elevated cortisol suppresses reproductive hormones and dampens dopamine activity, creating a double hit to desire. The solution isn’t vague advice to “relax more.” Structured approaches work better.
Mindfulness-based therapy tailored for sexual concerns has shown real promise. A program developed by researcher Lori Brotto uses eight weekly group sessions where participants learn to tune in to physical sensations and integrate mindfulness into sexual encounters. In a pilot study of women with low desire, participants reported significant improvements in sexual desire, overall sexual function, and reduced sex-related distress. Cognitive-behavioral therapy and couples communication techniques are also well-supported tools, particularly when low libido is tangled up with self-esteem issues, relationship tension, or anxiety about performance.
For women especially, desire is often closely linked to emotional closeness and feeling valued in a relationship. Addressing the relational context, not just the physical symptoms, can be the most effective path forward.
Supplements With Actual Evidence
Most supplements marketed for libido have weak or nonexistent evidence. Two stand out with credible research behind them.
Ashwagandha has the strongest recent data. In a double-blind, placebo-controlled study of healthy men, 300 mg of a standardized root extract taken twice daily for eight weeks produced a 61.9 percent increase in sexual desire scores compared to placebo. Participants also reported improvements in the duration and quality of sexual encounters, along with better mental health and reduced fatigue. The effects likely stem from ashwagandha’s ability to lower cortisol and improve stress adaptation, which indirectly supports hormonal balance.
Maca root has a longer traditional history and some clinical support. In a trial published in the World Journal of Men’s Health, men taking 3,000 mg of gelatinized maca daily (split into three doses before meals) for 12 weeks showed significant improvements in sexual function scores compared to placebo. The mechanism isn’t fully understood, as maca doesn’t appear to directly change testosterone levels, but it may influence desire through other pathways.
Neither supplement is a magic fix, but both have enough evidence to be worth trying alongside lifestyle changes.
Check Your Medications
Sexual side effects are common with antidepressants, particularly SSRIs. If your libido dropped noticeably after starting or changing a medication, that connection is worth discussing with your prescriber. Options exist: switching to a different medication, adjusting the dose, or adding a strategy to counteract the side effect. Blood pressure medications, hormonal contraceptives, and antihistamines can also suppress desire. Don’t stop any medication on your own, but do raise the question.
Prescription Options for Women
Two FDA-approved medications exist specifically for low sexual desire in premenopausal women. Flibanserin is a daily pill taken at bedtime that can gradually boost sex drive over several weeks. If desire hasn’t improved after eight weeks, it’s generally discontinued. Side effects include low blood pressure, sleepiness, dizziness, and nausea, and these worsen with alcohol.
Bremelanotide works differently. It’s a self-administered injection given under the skin of the belly or thigh before sexual activity, rather than taken daily. Nausea is common after the first dose but tends to improve with subsequent use. Other side effects include flushing, headache, and irritation at the injection site. Both medications target desire rather than physical arousal, and both require a prescription after evaluation for other contributing factors.
A Practical Starting Point
If you’re looking for a straightforward plan, focus on these changes first: get your sleep to at least seven hours consistently, add two to three sessions of strength training per week, clean up your diet in the direction of more whole foods and fewer processed ones, and address any obvious sources of chronic stress. These four steps influence testosterone, estrogen, dopamine, and cortisol simultaneously. Give them six to eight weeks before evaluating whether supplements, therapy, or a medical evaluation would add further benefit.