Male Infertility
Male Infertility is a hormonal-health condition concerning male reproductive function, particularly sperm characteristics and related hormone levels. Research in this area has examined sperm concentration, volume, motility, count, morphology, testosterone, luteinizing hormone, inhibin B, and follicle-stimulating hormone.
Understand how Male Infertility is categorized within hormonal health and explore the topic in a clear, focused format.
This list shows research findings, not treatments. Nothing here replaces medical care. If you have this condition, talk to a doctor.
What may help
None of these options has good evidence yet. Best evidence first.
1 option:1 no benefit found
SwimmingpracticeNo benefit found
Studies looked for a benefit and did not find one.
The one study found no benefit.
A 2025 study in animals found that swimming training alone did not significantly improve hormonal or sperm parameters and observed histological damage; benefits were reported only when swimming was combined with biotin.
Open the Swimming page
May not suit people with this condition
Supplements and practices linked to problems for people with this condition.
Finnish SaunapracticePossible
A systematic review pooling randomized and non-randomized human studies reported that sauna use was associated with reversible suppression of sperm count, concentration and motility after 3 months, with these measures reversed by 6 months.
Open the Finnish Sauna page
The expert view shows every study, dose protocol and source.
What may help
Interventions recorded as helping with this condition1 listedThe best we have, but the evidence is still weak
- →PracticesSwimmingCertaintyVery lowSourceAnimal research
A 2025 study in animals found that swimming training alone did not significantly improve hormonal or sperm parameters and observed histological damage; benefits were reported only when swimming was combined with biotin.
What to avoid
Interventions recorded as making it worse1 listedHighest probability
- →PracticesFinnish SaunaCertaintyMediumSourceClinical
A systematic review pooling randomized and non-randomized human studies reported that sauna use was associated with reversible suppression of sperm count, concentration and motility after 3 months, with these measures reversed by 6 months.
Who was studied
- Healthy people and patients
- Allergic Rhinitis
- Ankylosing Spondylitis
- Chronic Fatigue Syndrome
- Common Cold
- Copd
- Depression
- +4 more
Study result
Garolla 2013: reversible suppression of sperm count, concentration and motility after 3 months of sauna; reversed by 6 months.
Open Finnish SaunaRationale
Garolla 2013: reversible suppression of sperm count, concentration and motility after 3 months of sauna; reversed by 6 months.
How to read the evidence
Evidence tier — overall strength of the evidence for the whole compound
- StrongWell established — backed by strong, consistent human research.
- ModerateSome genuine support, but mostly from small or lower-quality studies. Promising, not proven.
- PreliminaryEarly-stage evidence — a promising hypothesis, not an established effect yet.
- LimitedVery limited evidence — treat this as a hypothesis, not proof.
- InsufficientNot enough good evidence to draw conclusions yet.
Certainty — how sure we can be that the effect is real
- Very highVery sure — strong, consistent evidence
- HighFairly sure — consistent evidence from good studies
- MediumModerately sure — new studies could change this
- LowNot sure — little or mixed evidence
- Very lowVery unsure — almost no usable evidence
Source — where the data comes from
- Meta-analysisPooled analysis of many trials — the strongest evidence
- RCTRandomized controlled trial — a strong human study design
- ClinicalA human clinical study
- Reference knowledgeFrom general health-science or pharmacology references, not a study of this exact claim
- Animal researchStudied in animals, not humans
- Community reportsAggregated user reports — anecdotal signal, not evidence
- TheoreticalMechanism-based reasoning, not yet tested
Study grade — quality of each underlying study (A best, D weakest)
- AHigh-quality — strong, consistent human trials
- BGood — solid evidence with some limitations
- CModerate — limited, small, or mixed-quality studies
- DWeak — preliminary, indirect, or animal-only
Confidence — how strongly the sources back a finding
A 0–100 score from study quality and agreement
Most supplement evidence is graded C–D. Read it as preliminary signal, not proof.
Full write-up
What is it
Male Infertility is a hormonal-health condition concerning male reproductive function, particularly sperm characteristics and related hormone levels. Research in this area has examined sperm concentration, volume, motility, count, morphology, testosterone, luteinizing hormone, inhibin B, and follicle-stimulating hormone. It also includes discussion of idiopathic infertility and potential effects on male reproductive health. Individual cases can vary and should be interpreted with a clinician.
Evidence-backed options
The clearest time-specific finding comes from Ashwagandha: a daily intake of 675 mg for 12 weeks was associated with clinically meaningful improvements in sperm concentration, volume, motility, testosterone, and luteinizing hormone. This provides a study duration, but not a confirmed time at which effects begin, and it does not establish that the same results apply to every cause of male infertility.
Coenzyme Q10, used alone or with other antioxidants, was associated with improvements in sperm count, total and progressive motility, and normal sperm morphology, alongside changes in testosterone, inhibin B, LH, and FSH. Other human findings are narrower: Lycopene may offer modest benefits for sperm concentration and nonprogressive motility, while Vitamin E findings concern infertility related to varicocele after varicocelectomy. The available information does not provide treatment durations or onset times for these options.
Several options have more limited applicability. Alpha-Lipoic Acid (ALA) has been described as an adjunct for idiopathic infertility, but the evidence does not establish pregnancy or live-birth outcomes. Curcumin, Melatonin, and Saffron Extract have findings spanning reproductive protection or semen measures, while Lutein, Maca Root, Shilajit, and Taurine rely on animal research or are insufficient to assess effectiveness in male fertility. Selenium is relevant specifically where selenium status is deficient or suboptimal. Astaxanthin did not affect semen parameters in the reported patients. Overall, the evidence varies by the cause of infertility, the outcome measured, and whether findings came from human or animal research; consultation with a clinician is appropriate for evaluating male infertility.
What to avoid
Finnish Sauna is flagged because sauna exposure was associated with reversible suppression of sperm count, concentration, and motility after 3 months; these measures reversed by 6 months. This makes sauna exposure particularly relevant when fertility is already impaired.
Bacopa Monnieri and Holy Basil (Tulsi) share a concern involving male reproductive measures. A study in male mice found that Bacopa Monnieri was associated with reversible reductions in sperm count, motility, and viability, although its relevance to humans is unknown. Animal studies of Holy Basil (Tulsi) similarly reported reversible reductions in sperm count, motility, and reproductive function. Because these findings concern reproductive function, Bacopa Monnieri may be inadvisable and medicinal doses of Holy Basil (Tulsi) may warrant avoidance when male fertility is already impaired.
Anyone with a medical condition, including male infertility, can discuss these considerations with a clinician before using medicinal doses of Bacopa Monnieri or Holy Basil (Tulsi), or engaging in Finnish Sauna.