Male Fertility Quiz

A mix of lifestyle and medical factors. On the lifestyle side: smoking and vaping, heavy alcohol, frequent heat to the testicles (hot tubs, saunas, a hot laptop on the lap), and excess weight are all linked to lower sperm count, motility, or quality — and all are changeable. On the medical side: outside testosterone or anabolic steroids (which shut down sperm production), a varicocele, scarring from past untreated STIs, certain medications (finasteride, some antidepressants), and chemotherapy or radiation. Age plays a gradual role for men too. Most men have at least one factor in the picture; the point isn't perfection, it's knowing which levers are yours to pull — and a semen analysis tells you where you actually stand.

Because sperm aren't made on demand — each one takes roughly 72 to 90 days to develop from a stem cell to a mature, swimming sperm. The sperm in any ejaculate today were built about three months ago, under three-month-old conditions. That cuts both ways: a fever, a hot-tub habit, or a heavy-drinking stretch shows up in samples weeks later, and quitting smoking or skipping the sauna won't register immediately either. It's why clinicians suggest giving any change a full production cycle — about three months — before judging it with a semen analysis, and why a single odd result is usually rechecked a couple of months later.

Yes — and it surprises a lot of men, because testosterone sounds like it should help fertility. Outside testosterone (prescribed TRT or non-prescribed anabolic steroids) tells the brain the body has plenty, so it stops sending the hormonal signals that drive the testicles to make sperm. Counts can fall to zero while you're on it. Production usually recovers after stopping, but it takes months and sometimes more than a year, and recovery isn't guaranteed for everyone. Crucially: don't stop on your own. Talk with the prescriber (or a urologist) — there are fertility-sparing ways to manage the transition, and abrupt stops have their own downsides.

The standard trigger is 12 months of regular, unprotected sex without a pregnancy. If the partner who would carry the pregnancy is 35 or older, that moves up to 6 months, because the evaluation shouldn't wait as long. And it's reasonable to test sooner — without waiting for the calendar — when a known male risk factor is in the picture: current or past testosterone or steroid use, chemotherapy or radiation, a known varicocele, a history of undescended testicle or genital surgery, or a past STI. The test itself is simple, non-invasive, and usually the single most informative first step, since a male factor contributes in roughly half of couples who struggle to conceive.

It can. Chlamydia and gonorrhea — especially when they went untreated for a while — can inflame and scar the epididymis, the coiled duct that stores and carries sperm, which can partially or fully block sperm from getting into the ejaculate. Not everyone who's had an STI is affected, and a treated infection often leaves no lasting problem, but a history of one belongs in any fertility evaluation. If you've never really been tested, that's worth fixing too: these infections are frequently silent, and testing (and treating anything found) protects your fertility and your partner's. A semen analysis will show whether anything downstream is actually affected.

Yes. This quiz runs entirely in your browser. Your answers are scored on your own device and are never sent to a server, saved, or shared — close the tab and they're gone. In a post-Dobbs world we treat reproductive and fertility data as sensitive by default, so nothing here is stored or transmitted, ever. The result is general educational information based on published urology and fertility-society guidance; it isn't medical advice or a diagnosis, and it can't replace a semen analysis or a conversation with a clinician.