You can increase your sperm count through a combination of lifestyle changes, targeted supplements, and, when necessary, medical treatment. The key thing to understand is timing: sperm take about 64 days to fully develop, so most changes you make today won’t show up in a semen analysis for roughly two to three months. That timeline applies whether you’re adjusting your diet, starting a supplement, or cutting out a habit that’s dragging your numbers down.
Exercise: The Right Amount Matters
Moderate exercise supports healthy sperm production, but more is not better. Men who engage in high volumes and intensities of training can experience drops in sperm concentration, motility, and the hormones that drive sperm production. Vigorous endurance exercise in particular may cause oxidative stress and DNA damage in sperm cells.
The sweet spot appears to be moderate-intensity activity. Endurance exercise and high-intensity interval training at reasonable levels improve metabolic health without negatively affecting reproductive parameters. If you’re currently sedentary, adding regular moderate exercise is one of the most reliable things you can do. If you’re training heavily, especially long-distance cycling or endurance running, scaling back may actually help. Research on male road bikers found elevated inflammatory markers after 8 to 16 weeks of moderate-to-rigorous cycling training.
Sleep Changes Sperm Production More Than You’d Think
Short sleep has a surprisingly direct effect on fertility. A study of 953 Danish men found that sleep disturbances were associated with lower sperm concentration, lower total sperm count, and fewer normally shaped sperm. A separate longitudinal study of 592 men found an inverted U-shaped pattern: both too little and too much sleep were linked to lower semen volume and total sperm count.
The optimal range is 7 to 9 hours per night. Sleeping fewer than 6 hours counts as insufficient for reproductive health. In one controlled experiment, college-aged men who were limited to 5 hours of sleep for 8 consecutive nights showed a 10% to 15% drop in testosterone compared to when they slept a full night. Since testosterone is the primary driver of sperm production, that kind of deficit adds up quickly.
Supplements: What Works and What Doesn’t
Not every supplement that sounds promising holds up in clinical trials. A large, well-designed study tested daily supplements of 5 mg folic acid and 30 mg elemental zinc for six months. The result: no significant differences in sperm concentration, motility, morphology, volume, or total sperm count compared to placebo. Despite zinc and folate being widely marketed for male fertility, the evidence doesn’t support them as standalone interventions.
Ashwagandha has stronger clinical backing. In a randomized, double-blind, placebo-controlled trial, men taking ashwagandha root extract for 8 weeks saw a 32.9% increase in sperm concentration, a 38.1% increase in total sperm count, and an 87% improvement in total sperm motility. Those are substantial numbers, though the study was conducted in healthy men, and results may vary depending on your baseline.
Coenzyme Q10 (CoQ10) is another popular option, but the evidence is mixed. A meta-analysis of randomized controlled trials found no statistically significant effect on sperm concentration overall. Some individual studies using 200 mg daily for 3 months did report improvements in men with diagnosed low counts, while others found benefits only for motility and morphology, not concentration. If you’re considering CoQ10, it may help with sperm quality more than raw count.
Medications That Suppress Sperm Count
Sometimes the fastest way to raise your count is to identify what’s lowering it. Several common medications have a direct, negative effect on sperm production.
- Testosterone replacement therapy is the biggest offender. It sounds counterintuitive, but taking supplemental testosterone shuts down the hormonal signals that tell your testicles to produce sperm. The most likely outcome is extremely low sperm concentration or a complete absence of sperm in the semen.
- Anabolic steroids work the same way, interfering with the hormone cascade needed for sperm production. The damage depends on the type, dose, and duration of use.
- SSRIs (antidepressants like sertraline or fluoxetine) can cause sexual dysfunction and delay ejaculation, which indirectly affects fertility.
- Opioids suppress reproductive hormones. The impact depends on the specific drug, dose, and how long you’ve been using them.
- Alpha-blockers prescribed for enlarged prostate, particularly silodosin and tamsulosin, can sharply reduce ejaculation volume or prevent ejaculation entirely.
- Chemotherapy drugs can significantly decrease or completely stop sperm production.
If you’re on any of these and trying to conceive, talk to the prescribing doctor about alternatives. In many cases, sperm production recovers after stopping the medication, though the timeline varies.
Smoking, Drugs, and Heat Exposure
Smoking tobacco has a documented negative impact on both sperm production and sperm movement. Methamphetamine reduces sperm motility in animal studies, increasing the likelihood of infertility. Marijuana, heavy alcohol use, and recreational drugs in general are associated with lower semen quality, though the degree depends on frequency and amount.
Heat is another underappreciated factor. Your testicles sit outside the body for a reason: sperm production requires a temperature slightly below core body temperature. Frequent use of hot tubs, saunas, laptop computers placed directly on your lap, and tight-fitting underwear can all raise scrotal temperature enough to impair production. Switching to looser underwear and reducing heat exposure are simple changes with real effects.
When a Medical Condition Is the Cause
A varicocele, which is an enlarged vein in the scrotum, is the most common treatable cause of low sperm count. It’s found in roughly 35% to 40% of men with fertility problems. Surgical repair produces measurable results: a meta-analysis found that microsurgical repair increased sperm concentration by an average of 9.71 million per milliliter and improved progressive motility by about 10%. The analysis showed significant improvements across nearly all semen parameters after varicocele repair, including total sperm count, total motile sperm count, and sperm morphology.
Hormonal imbalances, infections of the reproductive tract, and certain genetic conditions can also cause low counts. These require diagnosis through blood work and semen analysis, and the treatment depends on the underlying issue. If you’ve made lifestyle changes for three months without improvement, a semen analysis is a reasonable next step to identify whether something medical is going on.
Putting It All Together
The most effective approach combines several changes at once. Cut out any obvious suppressors (smoking, excess heat, problematic medications). Add moderate exercise if you’re not already active, or reduce training volume if you’re overdoing it. Prioritize 7 to 9 hours of sleep. Consider ashwagandha if you want supplement support with decent clinical evidence behind it. Then give it a full 64-day sperm production cycle, ideally closer to three months, before expecting to see results in a test. Sperm count is one of the more responsive markers in the body: most men who remove the obstacles and support the process will see meaningful improvement.