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Male Fertility and Age: A Detailed Chart of Sperm Health Over Time

Dr. Rinoy Sreedharan
Reviewed by Dr. Rinoy Sreedharan ,
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This information has been reviewed and approved by an experienced fertility specialist at Indira IVF to provide accurate and up-to-date guidance for our readers.

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Last updated: July 23, 2025

Synopsis

This article explores the relationship between male fertility and age, emphasising how sperm health changes over time. It breaks down key aspects of sperm quality—such as count, motility, morphology, and DNA fragmentation—by age group.
It also gives you a male fertility age chart and information about the potential reproductive risks associated with older paternal age, including increased chances of miscarriage and genetic abnormalities.
The article concludes with expert advice on lifestyle choices and medical options to help men preserve fertility as they age.

Introduction: The Link Between Age and Male Fertility

The topic of male fertility and age is often neglected. This is because of the belief that men can father children even at a later age, while females cannot, as their fertility declines rapidly with time.

However, male fertility also declines with age, just a little slower than that of women. This article attempts to clarify the myths around male fertility and age and provide a detailed representation of how sperm health changes with time.

Does Male Fertility Decline With Age?

Yes, male fertility does decline with age. However, men don’t experience a sharp drop in their fertility as women do during menopause.

Although men can produce sperm till their 70s and even beyond, the quality of the sperm deteriorates over time.

Age-related changes and male fertility decline begin in the mid-30s in males. These changes can make conception difficult and increase the risk of miscarriage and other prenatal disorders.

Let’s understand the decline of sperm health with age:

  • Sperm Production : A gradual decline is seen in sperm production after the age of 35.
  • Motility : As men age, the sperm’s swimming ability decreases, making it difficult for them to reach an egg for fertilisation.
  • Morphology : Ageing results in abnormal sperm production with irregularities in their shape, further making fertilisation difficult.
  • DNA Quality : The DNA quality decreases in men as the fragmentation of DNA rises with age.

Sperm Health by Age: A Visual Fertility Chart for Men

Male fertility is typically at its best during the 20s and early 30s. As men age, particularly after 35, both sperm quality and motility tend to decline slowly over time.

While it's true that men can father children even later in life, it may take longer to conceive, and the chances of certain fertility-related complications may increase.

The below male fertility age chart will give you a detailed understanding of how age impacts a man’s fertility:

Age Range Age Range Motility Morphology DNA Fragmentation Risk Fertility Outlook
Under 30 Optimal High Normal Low Very high chances of conception
30–34 Slight decline begins Slightly reduced Mostly normal Low–Moderate High fertility potential
35–39 Noticeable decline Reduced Some abnormal forms Moderate Moderate fertility
40–44 Moderate drop Further decline Increased abnormalities Higher Lower fertility, longer to conceive
45+ Significant decline Low Often poor High Higher miscarriage/genetic risk

Key Changes in Sperm With Age

As men age, their overall reproductive health also gets affected. Here’s how:

1. Decreased Sperm Motility

Sperm motility is the sperm’s ability to swing/move towards an egg for fertilisation. However, as men grow older, this ability of the sperm reduces, which further decreases the chances of a successful fertilisation.

2. Lower Sperm Count and Volume

The sperm count, or the number of sperm produced per ejaculation, is also reduced with age. The volume of the semen produced also decreases. This results in fewer chances of fertilisation.

3. Abnormal Sperm Morphology

Poor morphology or irregularities in the sperm shape are a major cause of male fertility decline. A misshapen sperm cannot easily penetrate the egg or move efficiently towards it.

4. DNA Fragmentation

One of the most critical changes that is observed in males as they age is the increase in DNA fragmentation or damage in the DNA of the sperm. A damaged DNA significantly impacts the quality of the embryo formed, further leading to heightened risks of miscarriage and genetic abnormalities.

How Male Age Affects Pregnancy Outcomes

Although men continue to produce sperm later in life, poor sperm quality affects both the chances of a successful pregnancy and the health of the baby. A lot of pregnancy complications can occur. Since the ejaculation is not healthy after a certain age, it takes longer than the usual time for conception. DNA damage at an advanced age can result in high chances of a failed pregnancy and miscarriage.

Click here to read more about - How to Increase Sperm Count

Can Older Men Still Father Children?

Absolutely, older men can still have biological children. However, it can be difficult at times to conceive naturally due to the reduced sperm quality. Couples with advanced paternal age might have to rely on assisted reproductive techniques like IVF or ICSI to have a successful pregnancy. Additionally, adopting a healthy lifestyle and receiving adequate medical support from a specialist can further enhance your chances of conception.

Tips to Preserve Male Fertility

Although you can’t pause the ageing process, you can slow down the effects of ageing on your sperm health. Here are a few practical ways to preserve male fertility:

  • Maintain a Healthy Weight and Diet

    A healthy diet and controlled weight can help improve the reproductive health of an individual. Antioxidants, such as vitamin C, vitamin E, and zinc, help protect sperm from damage.

  • Avoid Smoking, Alcohol, and Hot Environments

    Overconsumption of harmful substances like alcohol or smoking can deteriorate sperm health, resulting in DNA damage. A lot of heat exposure from prolonged use of saunas or hot tubs can also interfere with testicular function.

  • Regular Exercise and Stress Reduction

    People who have a regular workout routine or exercise regularly may have improved testosterone levels and sperm quality. It also helps regulate stress levels, which in turn improves hormonal balance.

  • Consider Sperm Freezing Before Age 40

    Men who are in their early or mid-30s and are not yet ready to start a family should consider sperm freezing to preserve their good-quality sperm samples for a healthy conception in future.

Click here to read about Foods to Increase Sperm Count

Conclusion

Male reproductive health is often taken for granted, but like other biological systems, it too ages. While the decline is slow, it can impact conception rates and cause pregnancy complications. Thus, understanding how sperm health is impacted by age and taking proactive measures to maintain it becomes crucial.

Common Questions Asked

At What Age Does Male Fertility Start Declining?

 

Male fertility starts to decline after 35; however, evident changes are seen in the 40s.

Can a Man in His 50s Still Conceive Naturally?

 

Yes, but the chances are very low with higher risks of miscarriage, pregnancy complications and genetic disorders.

Does Lifestyle Affect Sperm Health More Than Age?

 

Both factors are equally responsible for preserving reproductive health. However, a healthy lifestyle can delay the impact of age on sperm health.

Is Sperm Freezing Recommended for Men Over 35?

 

While it is recommended to freeze sperm in the early 30s, men over 35 can also get their sperm frozen after consulting a urologist.

How Often Should Men Test Their Fertility?

 

Usually, doctors recommend a fertility test after 12 months of trying to conceive. If the female partner is over 35 years, every 6 months is ideal.

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