When do men become infertile?

When do men become infertile?

Many men experience infertility as they reach their mid-thirties. While there is no one answer to why some men are unable to conceive, there are a few key factors that contribute. Poor health can interfere with male fertility and chronic stress can lead to low levels of secretion of hormones, which can block sperm from traveling to the egg. Female age can also be a factor for it is harder to conceive when women age.

Other causes of infertility include genetic problems or abnormalities in the reproductive system. In most cases, however, a man’s age is only one contributing factor and other aspects such as lifestyle and diet also play a role.

Fertility and the aging male

age related infertility

Aging is a natural process that affects everyone, but it can have a significant impact on male fertility decline. As men age, their testosterone levels decline, which can lead to problems with sperm production and quality. The same goes when females age. But, there is an increased risk of male fertility decline for older fathers.

Furthermore, many lifestyle factors – such as smoking and obesity – can also impact male fertility decline. When do men start to become infertile? This question is still largely unanswered, but there are some indications that male fertility decline may start happening at around the age of 35 in most cases.

How does age affect male fertility?

age groups

As men age, the male fertility decline is possible. This is especially true for men over the paternal age of 40. The average man’s sperm count decreases by 50 percent after the age of 40. This means that paternal age should be below 40.

Additionally, over 50 percent of all cases of male fertility decline are due to problems with the sperm itself. These problems can include low sperm count, poor motility, and abnormalities in the DNA of the sperm because of the male paternal age. Genetic factors are also a major cause of infertility in men.

Sperm motility

Sperm motility is the ability of sperm to swim forward and fertilize an egg. It is essential for sperm to be able to reach an egg, as they are the only cells in the reproductive tract that can transmit genetic material from one parent to another. When women age, there is an increased risk that all the eggs will have trouble fertilizing.

Sperm motility can be affected by a number of factors, including age, lifestyle, environment, and illness. When does male fertility decline? The answer is not completely clear, but there are some key points that need to be taken into account.

Age is one important factor to consider. As a male age, their ability to produce healthy sperm decreases, and sperm motility decline. This is due to a number of factors, including decreased production of semen quality proteins and impaired function of the seminiferous tubules (the tubes in which sperm are produced).

See also  Risk factors for infertility

Sperm DNA fragmentation

Male fertility decline is a result of sperm DNA fragmentation. This occurs when the sperm count falls below a certain threshold, and it is believed to be caused by environmental and lifestyle factors such as obesity and exposure to toxins.

While there is no cure for infertility due to DNA fragmentation, treatments such as in vitro fertilization (IVF) can help men restore their fertility. Find the nearest support services in your area for a step-by-step plan to address decreased pregnancy rates due to low sperm concentration and male age.

Sperm count and concentration

age related fertility decline

When sperm counts and concentrations decrease, men may experience infertility. Although the cause of decreased fertility is not fully understood, a number of factors are thought to contribute, including: lifestyle choices such as smoking and drinking; age; environmental toxins; genetics; and male hormones.

Many couples can overcome infertility by undergoing counseling and hormone therapy. Also, the increased risk of female infertility comes when women age. However, if the problem is severe or if there are no other viable options, surgery may be necessary. A woman’s chance for higher pregnancy rates and healthy babies with no genetic abnormalities can be possible upon checking semen parameters and if all the eggs can be fertilized.

Sperm morphology

normal morphology

Sperm morphology is a key factor in determining an individual’s ability to conceive. According to the American Society for Reproductive Medicine, when men become infertile, there are several factors that can contribute, including:

  • A decrease in the number of spermatozoa (sperm cells) or their quality.
  • A decrease in their mobility.
  • A blockage of the flow of semen affects female fertility.
  • A problem with the sperm’s ability to fertilize an egg. 
  • A problem with the woman’s reproductive tract that affects female fertility. 

Each man is unique and therefore may experience different normal sperm morphology problems that prevent him from becoming pregnant. But regardless of the cause, there are steps that can be taken to improve sperm morphology and increase fertility potential.

Other semen parameters

sperm parameters

Infertility can be caused by a variety of factors, including sperm abnormalities, low sperm count, semen volume, and sperm morphology. To increase pregnancy rates, you may check on the following:

  • Sperm abnormalities can include abnormal shape, size, or movement; abnormal DNA content; and impaired fertility.
  • Sperm count is the number of spermatozoa per milliliter of semen.
  • Semen volume is the amount of semen ejaculated.
  • Sperm morphology is the shape and form of sperm cells.
  • Low sperm count can be due to problems with either the testicles or with spermatogenesis (the process by which new sperm are created).
  • Male factor infertility is usually caused by problems with one or more components of the male reproductive system.

Birth defects

Although many people do not know it, birth defects are a common problem for men. In fact, they can be the cause of male infertility. Birth defects can affect any part of the body, including the reproductive system.

There are many different types of birth defects, but some of the most common include: congenital heart disease, hypospadias (a urethral opening on the outside of the penis that is not in line with the rest of the body), and testicular cancer.

If you think that you may have a birth defect, it is important to get tested. Birth defects can be difficult to detect, but tests can help identify them early on. If you are able to identify a birth defect early on, it may be possible to take steps to improve your chances for a healthy pregnancy.

See also  Drugs that affect sperm quality

Hormonal changes

The body’s hormones are responsible for many important functions, including regulating the menstrual cycle, stimulating growth in children, and controlling weight. Changes in the level of certain hormones during menopause can lead to a variety of problems, including reduced fertility.

Here are some of the key factors that can affect hormone levels:


As males age, their hormone levels may start to decline. This is because the body produces less testosterone and other hormones as it gets older. Additionally, women who have had their ovaries removed typically have a much harder time recovering their hormone levels than women who have never had surgery.


Many medications can interfere with hormone levels. This includes medications for conditions like diabetes and cancer, as well as birth control pills. Testosterone replacement therapy may be an effective solution for a man’s increasing age as sperm motility decreases.

Anatomic changes

There are many different ways in which the male anatomy can change male fertility. One of the most common is a decrease in sperm quality. Other causes of infertility include problems with the testicles or penis, damage to the epididymis, low levels of testosterone, and genetic problems. Many treatments are available for these various causes of the decrease in male fertility, so finding out what is causing your problem is essential to getting the help you need.

Medical conditions and environmental factors

Medical conditions and environmental factors are both known to be contributors a decrease in male fertility. Here are eight examples of how each can affect fertility. 

Chronic diseases

Such as diabetes, can damage blood vessels, which can lead to poor sperm production. 


It can increase the risk of testicular cancer and other reproductive health problems. 

Exposure to certain toxins

Such as heavy metals, pesticides, and chemicals, can damage the male reproductive system. 


It may play a role in reducing sperm production by increasing inflammation in the male body. 

Extreme temperatures

Such exposure to cold weather or hot weather extremes can also reduce sperm production. 

Stressful life events

Such as a death in the family or a difficult financial situation – have been linked with low sperm counts and impaired fertility.

How men can improve their fertility as they age?

age related decline

Male fertility decline can be connected to increasing male age. This is due to a number of factors such as genetics, lifestyle choices and illness. However, there are ways that men can improve their fertility as they get older. Here are 8 tips to help: 

  • Take care of your health. Good nutrition, exercise and a healthy weight are all important for optimal health and fertility. Make sure to keep your immune system strong by avoiding infections and getting vaccinated against common illnesses. 
  • Quit smoking. Smoking can reduce the production of testosterone in men, which can impact fertility. If you smoke, seek out help to quit and make sure that you receive proper medical care if you suffer from any related health conditions such as COPD or depression. 
  • Avoid heavy drinking. Alcohol has been linked with decreased sperm production and damage to the male reproductive organs.


In conclusion, there are many potential causes of male infertility. While some may be corrected through lifestyle changes or medication, others may require surgery or even assisted reproductive technologies (ART) in order to achieve conception. If you are experiencing difficulty conceiving, it is important to consult with a healthcare professional who can help identify the cause and recommend the best course of treatment.

See also  Infertility male causes and treatment


What are the signs of a man being infertile?

There are many potential signs of male infertility. Some of the most common include: decreased sperm production, poor semen quality, poor sexual function, and reduced fertility. If you think that you may be experiencing any of these symptoms, it is important to schedule a consultation with a qualified medical professional to determine the cause and possible treatments.

Can a man over 50 get a woman pregnant?

There is a lot of discussion about whether or not men over 50 can get pregnant compared to a woman’s age. Surprisingly, the answer to this question is somewhat unclear. There are a few theories as to why older men may have difficulty getting pregnant, but no one really knows for sure.

Some believe that male fertility declines gradually with age and that there is simply less chance for older men to conceive than their younger counterparts. Other experts suggest that older fathers might have trouble triggering ovulation in women, or they may not be able to provide enough nutrients to the embryo during development. It all boils down to the different age groups of men trying to conceive.

Whatever the case may be, it’s clear that more research needs to be done in order to better understand how age affects fertility.

When does male sperm quality decline?

Sperm quality is an important aspect of male fertility. It can decline gradually over time, or it can decline suddenly and cause infertility. There are many factors that can affect sperm quality, and the causes are often unknown. However, there are some common factors that may contribute to poor sperm quality.

Poor sperm quality can be caused by a number of factors, including environmental exposures, lifestyle choices, and diseases. Some of the most common environmental exposures that may adversely affect sperm produced include smoking cigarettes and using excessive amounts of alcohol. Lifestyle choices that may impact sperm quality include being overweight or obese, having poor diet habits, and not getting enough exercise. Diseases such as testicular cancer and viral infections can also cause low sperm quality.

If you are experiencing problems with your fertility, it is important to consult with a doctor to determine the cause of your low sperm count.

At what age is sperm count highest?

When it comes to fertility, there are a few things that scientists and doctors consider. One of these is sperm count. Surprisingly, sperm count isn’t just something that affects men – it’s also an important factor for women. In fact, according to some studies, sperm count can be one of the best indicators of a man’s fertility.

So what does this mean for couples trying to conceive? According to some experts, there is no age at which a man’s sperm count should start to decline – in fact, there may be no optimal point at all. Today, there is an increasing paternal age wherein men choose to father children at an older age. This means that any man over the age of 30 could potentially have high levels of sperm and still be able to conceive naturally.

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