Luteinizing hormone (LH) is produced by your pituitary gland in response to signals from the hypothalamus, and raising it comes down to removing whatever is suppressing those signals or directly stimulating the pathway. Normal LH levels range from 1.24 to 7.8 IU/mL in men and fluctuate widely in women, from as low as 0.61 IU/mL during the luteal phase to a midcycle peak of 21.9 to 56.6 IU/mL. If your levels fall below these ranges, the fix depends on what’s dragging them down.
How Your Body Controls LH
LH production starts in the hypothalamus, where specialized neurons release gonadotropin-releasing hormone (GnRH) in pulses. Each pulse travels to the pituitary gland and triggers a corresponding burst of LH into the bloodstream. LH then acts on the ovaries or testes to drive sex hormone production: testosterone in men, estrogen and progesterone in women.
This system runs on a feedback loop. When sex hormone levels are adequate, they signal the hypothalamus and pituitary to ease off on GnRH and LH. When sex hormones drop, the brake lifts and LH rises. That’s why people with gonadal failure (ovaries or testes that aren’t producing enough hormones) typically have elevated LH. Any strategy to raise LH either removes something that’s suppressing this loop or adds a stimulus that activates it.
Reduce Stress and Lower Cortisol
Chronic stress is one of the most potent suppressors of LH. Cortisol, your body’s primary stress hormone, acts directly on the pituitary gland and reduces its responsiveness to GnRH. In the presence of sex hormones like estrogen, sustained high cortisol can slash GnRH pulse frequency by as much as 70%. Even a moderate cortisol elevation lasting around 27 hours has been shown to cut GnRH pulses by 45% and delay the LH surge by 10 hours.
This means that sleep deprivation, overtraining, work pressure, or any ongoing source of psychological or physical stress can meaningfully suppress your LH output. Stress reduction isn’t a vague wellness suggestion here. It’s a direct hormonal intervention. Consistent sleep schedules, manageable training loads, and whatever genuinely lowers your stress (not just what people tell you should lower it) will help restore normal pulsatile LH secretion.
Prioritize Deep Sleep
LH is released in pulses, and those pulses are tightly linked to deep sleep. Research on the timing of nocturnal LH release found that the accumulation of deep sleep in the 20 minutes before an LH pulse was a significant predictor of that pulse firing. Interestingly, the deep sleep didn’t need to be one unbroken block. Even fragmented deep sleep, as long as enough of it accumulated, was sufficient to trigger LH release.
This has practical implications. If you’re a light sleeper or wake up frequently, you may still produce adequate LH as long as you’re cycling back into deep sleep stages. But if you’re cutting total sleep short, sleeping fewer than six or seven hours, or relying on alcohol or screens before bed (both of which reduce deep sleep specifically), your LH pulses are likely taking a hit. Aim for seven to nine hours in a cool, dark room, and treat sleep quality as seriously as sleep duration.
Maintain Adequate Body Fat
Being too lean suppresses LH, particularly in women. Research comparing young female athletes with and without normal menstrual cycles found that those who had lost their periods (a condition called hypothalamic amenorrhea) had lower body fat, lower leptin levels, and correspondingly lower LH secretion. Percent body fat was positively associated with both leptin and LH output.
Leptin is a hormone released by fat tissue that effectively tells your brain whether you have enough energy reserves to support reproduction. When body fat drops too low, leptin falls, and the hypothalamus responds by dialing down GnRH pulses. This is why aggressive dieting, eating disorders, and extreme leanness so reliably cause hormonal disruption. For women who have lost their periods due to low body weight or excessive exercise, gaining even a modest amount of fat can restore LH pulsatility and bring cycles back. Men aren’t immune either. Very low body fat percentages from contest prep or chronic undereating can suppress the entire reproductive axis.
There’s no single body fat cutoff that applies to everyone, because individual sensitivity varies. But if you’re combining intense training with caloric restriction and noticing signs of low sex hormones (low libido, fatigue, lost periods, poor recovery), insufficient body fat is a likely contributor.
D-Aspartic Acid Supplementation
D-aspartic acid (DAA) is one of the few supplements with direct human trial data showing an effect on LH. In a study of 23 men who took about 3 grams of sodium D-aspartate daily for 12 days (along with B vitamins and folic acid), 87% of participants saw a significant increase in LH. On average, LH rose by 33%, from a baseline of 4.2 to 5.6 mIU/mL. Testosterone followed, increasing by 42% over the same period.
These are meaningful numbers for a supplement, though a few caveats apply. The study was small and short-term, and later research in resistance-trained men has shown more modest or negligible effects, suggesting that DAA may work best in people whose baseline hormone levels are lower rather than in already-optimized athletes. Still, for someone with borderline-low LH looking for a non-prescription option, DAA at roughly 3 grams per day is one of the better-supported choices.
Avoid Overtraining and Caloric Deficits
Exercise supports hormonal health in general, but there’s a tipping point. Excessive training volume combined with inadequate caloric intake creates an energy deficit that suppresses the hypothalamic-pituitary axis through the same leptin and cortisol pathways described above. Endurance athletes, gymnasts, and anyone training intensely while eating in a significant caloric deficit are at highest risk.
If you’re training hard and noticing signs of hormonal suppression, the answer is rarely to train harder. Eating enough calories to match your expenditure, incorporating rest days, and periodizing intense training blocks with recovery phases all help keep LH production intact. For some people, simply adding 300 to 500 calories per day and reducing training volume for a few weeks is enough to see a measurable hormonal rebound.
Medical Options for Low LH
When lifestyle changes aren’t enough, or when LH is low due to a pituitary or hypothalamic disorder, medical intervention becomes necessary. One common approach involves human chorionic gonadotropin (hCG), a hormone that activates the same receptor as LH. While hCG doesn’t raise LH itself, it mimics LH’s effects on the gonads, stimulating testosterone production in men and ovulation in women. Long-term hCG treatment has been shown to restore testosterone levels, increase testicular volume, and improve sperm production in men with certain genetic conditions that impair LH function.
Another medical option is clomiphene, which blocks estrogen’s feedback signal at the hypothalamus and pituitary. With that brake removed, the brain increases GnRH output and LH rises. This is commonly used in men with secondary hypogonadism (low testosterone caused by insufficient pituitary signaling rather than testicular failure) and in women undergoing fertility treatment.
Pulsatile GnRH therapy, delivered through a small pump that mimics the body’s natural rhythm, is used in more severe cases of hypothalamic dysfunction. It directly restores the signal that the pituitary needs to produce LH on its own.
What Suppresses LH Without You Realizing
Several common factors quietly lower LH that people often overlook. Exogenous testosterone or anabolic steroids are the biggest one. When you supply sex hormones from outside, the feedback loop tells your pituitary to shut down LH production, sometimes to undetectable levels. This is why men on testosterone replacement therapy often experience testicular shrinkage and infertility unless hCG is used alongside it.
Opioid medications, even when prescribed, are another well-documented suppressor. Chronic opioid use frequently causes hypogonadism through direct suppression of GnRH pulses. Obesity also lowers LH in men, because excess fat tissue converts testosterone to estrogen, which feeds back to suppress the pituitary. Losing weight in this context can raise LH and testosterone simultaneously.
Alcohol in excess, particularly heavy or binge drinking, disrupts both the hypothalamus and the pituitary directly. Even moderate chronic drinking has been associated with lower reproductive hormone levels in some studies. If you’re trying to optimize LH, limiting alcohol is low-hanging fruit.