Male Fertility Tracker
Male factor accounts for ~50% of all fertility challenges. Get your sperm health lifestyle score and personalized tips to improve it.
Also try: Female Fertility Score · Couples Dashboard
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View Male Fertility Supplements →Understanding Male Fertility
Male fertility depends primarily on sperm quality — count, motility, and morphology. Around 40-50% of infertility cases involve a male factor, yet male fertility is far less discussed than female fertility. The good news is that sperm health responds well to lifestyle changes, often improving within 3 months — the time it takes for a new batch of sperm to fully develop.
This assessment evaluates the key lifestyle and health factors known to affect sperm quality. It is not a semen analysis — only a lab test can measure your actual sperm parameters — but it gives you a clear picture of where you stand and what you can improve.
Key Factors That Affect Sperm Health
- Heat exposure — the testes need to stay 2-4C below body temperature. Laptops on the lap, hot tubs, tight underwear, and sedentary work raise scrotal temperature and reduce sperm quality
- Smoking — reduces sperm count, motility, and morphology and increases DNA fragmentation
- Alcohol — more than 14 units per week suppresses testosterone and reduces sperm quality
- Stress — chronic stress raises cortisol, which suppresses testosterone production
- BMI — excess body fat converts testosterone to estrogen, disrupting the hormonal environment needed for sperm production
- Varicocele — enlarged veins in the scrotum are the most common correctable cause of male infertility, found in around 15% of men
- Age — sperm quality begins to decline after 40, with increased DNA fragmentation and reduced motility
Frequently Asked Questions
How many times should a man release sperm in a week?
For conception, ejaculating every 2-3 days maintains optimal sperm quality and ensures fresh sperm are available throughout your partner's fertile window. Ejaculating daily can slightly reduce sperm count per sample but does not significantly impact fertility in men with normal baseline counts. Abstaining for more than 5-7 days can increase sperm count but reduces motility and increases DNA fragmentation.
Can thick sperm cause pregnancy?
Yes — semen thickness (viscosity) does not prevent pregnancy on its own. Semen naturally starts as a gel after ejaculation and liquefies within 15-30 minutes. Persistently thick semen that does not liquefy can reduce the ability of sperm to swim freely, potentially affecting fertility. If you notice consistently thick, clumpy semen, a semen analysis can determine whether this is affecting sperm motility.
What does immotile sperm mean?
Immotile sperm are sperm that cannot swim. A semen analysis categorises sperm as progressively motile (swimming forward), non-progressively motile (moving but not forward), and immotile. WHO guidelines consider a normal sample to have at least 42% total motility. High levels of immotile sperm (asthenozoospermia) can significantly affect fertility and may require IUI or IVF with ICSI.
How long does sperm live in the female body?
Sperm can survive in the female reproductive tract for up to 5 days when fertile-quality cervical mucus is present. This is why having sex in the days before ovulation — not just on ovulation day — is effective for conception. Without fertile mucus, sperm typically survive only a few hours.
What age do men stop producing sperm?
Men produce sperm throughout their lives — unlike women, who are born with a fixed egg supply. However, sperm quality declines with age. After 40, sperm DNA fragmentation increases, testosterone levels drop, and motility and morphology worsen. While men in their 60s and 70s can still father children, the time to conception is longer and the risk of genetic abnormalities increases.
Does masturbation reduce sperm count?
Frequent ejaculation temporarily reduces the number of sperm per sample, but sperm production is continuous and reserves replenish within 24-48 hours. For men with normal sperm counts, masturbation frequency has no meaningful impact on fertility. If you have a borderline low count, abstaining for 2-3 days before trying to conceive can help maximise per-ejaculate count.
What is azoospermia?
Azoospermia means no sperm are present in the ejaculate. It affects around 1% of men and 10-15% of infertile men. There are two types: obstructive azoospermia (sperm are produced but cannot exit due to a blockage) and non-obstructive azoospermia (the testes are not producing sperm). Obstructive cases can often be treated surgically. A reproductive urologist can determine the type and treatment options.
This assessment is for educational purposes only and does not replace a clinical semen analysis. If you have concerns about your fertility, speak to your GP or a reproductive specialist.