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The Daily Insight

Does caffeine affect sperm

Author

Mia Morrison

Published Apr 08, 2026

Research has shown that moderate caffeine consumption has no negative influence on sperm count or quality, but reasonable consumption is 300 milligrams, or only about two cups of coffee, says Caitlin Dunne, a fertility doctor at the Pacific Centre for Reproductive Medicine in Vancouver.

Should men reduce caffeine when trying to conceive?

But a new study suggests the men in their lives need to limit caffeine too. Pregnant women who had more than two caffeinated drinks a day while trying to conceive had a 74 percent higher risk of miscarriage than their peers who drank less coffee, tea, soda and energy drinks, the study found.

Does caffeine increase sperm motility?

No association between caffeine and sperm motility or morphology. Men with a high caffeine intake had about 14% higher concentration of testosterone than men with a low caffeine intake.

Does caffeine permanently affect fertility?

There is no clear proof that caffeine affects the ability to become pregnant, but some studies have found that women who drink large amounts of caffeine may take longer to become pregnant and may have a higher risk of miscarriage.

Is coffee good for men?

Similar findings have been documented for men: another large-scale study, published in the journal Arthritis & Rheumatism, found that men who drank four to five cups of coffee per day decreased their risk of gout by 40 percent, and that those who consumed six cups or more lowered gout risk by 60 percent.

What kills sperm cells in a man?

Exposure to high temperatures, like in hot tubs, hot baths or saunas can cause the temperature of the testes to become too hot. This can kill sperm and lower sperm count.

How much caffeine can a man have when TTC?

“A little bit of coffee, two to three cups a day, has been shown to help improve motility so that those sperm can get to where they need to go faster and better,” Mills said. “Men who drink too much coffee, say six cups, have been shown to have impaired fertility.”

How can men reduce fertility?

Overheating the testicles–frequent use of saunas or hot tubs can temporarily lower the sperm count, as can sitting , wearing tight clothing, or working on a laptop for extended periods. Exposure to toxins like benzenes, pesticides, herbicides, etc. which can lower sperm count.

What makes a man fertile?

You’re most likely to be fertile if your ejaculate — the semen discharged in a single ejaculation — contains at least 15 million sperm per milliliter. Too little sperm in an ejaculation might make it more difficult to get pregnant because there are fewer candidates available to fertilize the egg.

Why is coffee bad for fertility?

Caffeine can stimulate the nervous system, open up airways and constrict blood vessels,” he says, but there’s no evidence that this affects your chances of getting pregnant. Roberts cites one study of European women that found that women who drank more than five cups of coffee a day took longer to conceive.

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Does caffeine increase testosterone?

Among men, consumption of caffeinated coffee increased total testosterone and decreased total and free estradiol. Among women, decaffeinated coffee decreased total and free testosterone and caffeinated coffee decreased total testosterone.

Does caffeine make you hornier?

Researchers found that because caffeine has stimulant properties that cause an increased heart rate and blood pressure, consuming something caffeinated may also facilitate genital arousal — i.e., make you horny.

Are energy drinks bad for male fertility?

Conclusion. The long-term consumption of energy drinks interferes negatively with sperm concentration, without affecting sperm motility and morphology or altering the hepatic, cardiac, or renal functions.

Is Morning sperm more fertile?

Some research says that yes, sperm may be more potent in the morning. But other studies suggest it’s more potent in the afternoon or that it doesn’t change at all. Whatever the case, it’s highly unlikely that the time of day you have sex will affect your chances of conceiving.

Why am I ovulating but not getting pregnant?

What if I am ovulating but still not getting pregnant? If you are ovulating but not getting pregnant, the cause is may be polycystic ovaries (PCO). Again it is not uncommon, since around 20% of women have the condition.

What is the most fertile age for a man?

Men younger than 40 have a better chance of fathering a child than those older than 40. The quality of the sperm men produce seems to decline as they get older. Most men make millions of new sperm every day, but men older than 40 have fewer healthy sperm than younger men.

How can I check if my sperm is fertile?

To test a person’s sperm count, a doctor will ask the person to ejaculate into a specimen cup. They will send this specimen to a laboratory, where technicians will evaluate the sample for the estimated sperm count and other factors. The results may vary depending on the laboratory.

Is caffeine bad for egg quality?

Scientists aren’t sure why caffeine consumption might affect fertility, but animal studies indicate that it may inhibit egg maturation. Caffeine may also be metabolized differently during pregnancy, and it can cross the placenta and may affect a growing baby.

Does heavy drinking affect fertility?

Women who drink large amounts of alcohol (seven or more drinks a week or more than three drinks on one occasion) are more likely to have heavy or irregular periods and fertility problems. Alcohol can also affect ovulation, which can make it difficult to conceive.

Does masturbation decrease testosterone?

Many people believe that masturbation affects a man’s testosterone levels, but this is not necessarily true. Masturbation does not seem to have any long-lasting effects on testosterone levels.

Can caffeine affect hormones?

Caffeine is able to enter the brain and directly increase blood pressure and stimulate the release of stress hormones. These hormones are known to affect insulin and blood sugar in the body.

Is caffeine good for erectile dysfunction?

According to a new study out in the journal PLOS ONE, caffeine intake is linked to reduced odds of having erectile dysfunction (ED) in men who drink the equivalent of two to three cups of coffee per day.