Will drinking too much coffee cause men to become infertile?

The relationship between coffee and male infertility

Coffee is a widely consumed beverage that is enjoyed by many people. However, some people are concerned that excessive coffee consumption may have a negative impact on fertility, particularly in men. This article will explore the relationship between coffee and male fertility.

1. Effects of caffeine on sperm quality

First of all, we need to understand the main ingredient in coffee - caffeine. Studies have shown that moderate intake of caffeine does not directly lead to male infertility problems. However, long-term intake of high doses may have a certain impact on sperm quality.

A study published in the Journal of the American Medical Association found that when high doses of caffeine were consumed, more than 300 mg (about three cups) per day, sperm count and motility decreased. This may be due to high doses of caffeine disrupting the balance of the internal environment of the testicles.

2. Effects of caffeine on testicular function

Caffeine is metabolized into trimethyluric acid (TMX) in the body, and TMX may interfere with the synthesis and secretion of androgens in the testicles. Studies have found that long-term high-dose caffeine intake can lead to a decrease in androgen levels in the blood, thereby affecting sperm production and quality.

In addition, caffeine may also damage sperm DNA. A study published in the Journal of Reproductive Toxicology pointed out that high-dose caffeine exposure can increase the rate of sperm chromosome abnormalities and reduce sperm DNA integrity.

3. Relationship between coffee and other infertility risk factors

In addition to its direct impact on male fertility, excessive coffee consumption may also be associated with other infertility risk factors.

The first is related to increased testicular temperature. Excessive intake of beverages containing large amounts of caffeine causes the body to produce more urine and increase the frequency of urination. This increases the pressure on the testicles during urination, causing the testicles to heat up. High temperatures have long been considered an important factor in infertility.

Secondly, it is related to the decrease in sperm motility. Caffeine has a diuretic effect, which may lead to a decrease in body water. This will increase the concentration of semen, thereby affecting the motility and survival rate of sperm.

4. How to drink coffee properly

Although excessive coffee consumption may have some impact on male fertility, moderate intake does not pose a significant risk. According to the European Food Safety Authority (EFSA), consuming less than 400 mg of caffeine per day (about four cups) is relatively safe.

In addition, men should minimize or avoid drinking beverages containing large amounts of caffeine when planning pregnancy or when fertility problems are discovered. This can maximize the protection of sperm quality and quantity and increase the chances of successful conception.

in conclusion

Overall, drinking coffee within a moderate range does not directly lead to male infertility problems. However, excessive intake of high doses of caffeine may have a certain impact on sperm quality and testicular function. Therefore, when planning pregnancy or having fertility problems, men should pay attention to controlling their caffeine intake to protect their fertility.