When couples experience difficulty conceiving, many people instinctively assume the cause lies with the woman.In reality, fertility is a shared journey. Male factors contribute to fertility challenges in up to 50% of couples experiencing infertility, making male reproductive health just as important as female reproductive health when investigating fertility concerns. Despite this, men are often assessed later than they should be, delaying diagnosis and, in some cases, delaying treatment. Understanding male fertility is an important step towards ensuring both partners receive the care and support they need.
Male Fertility Is More Commonly Affected Than Many People Realise
Infertility affects millions of couples worldwide, and male factors are involved either on their own or alongside female factors in approximately half of all cases. Yet many men have no obvious symptoms of reduced fertility. A man may feel completely healthy while still experiencing changes in sperm count, movement, or quality that can affect the chance of conception. This is why fertility assessment should always include both partners from the beginning.
What Influences Male Fertility?
Male fertility is influenced by a combination of lifestyle, environmental, hormonal, and medical factors.Some of the most common influences include:
Lifestyle Factors
Healthy lifestyle choices can play an important role in supporting sperm production and overall reproductive health.
Factors that may affect sperm quality include:
- Smoking
- Excessive alcohol consumption
- Recreational drug use
- Poor nutrition
- Obesity
- Physical inactivity
- Chronic stress
- Poor sleep
While lifestyle changes cannot address every cause of male infertility, improving overall health may help optimise sperm production and reproductive function.
Medical Conditions
Certain medical conditions can also affect male fertility, including:
- Hormonal disorders
- Diabetes
- Previous infections
- Varicoceles (enlarged veins around the testicle)
- Previous chemotherapy or radiation therapy
- Genetic conditions
- Undescended testes
Some medications may also influence sperm production, making a thorough medical history an important part of fertility assessment.
Age
Although men continue producing sperm throughout life, sperm quality gradually changes with age. Advanced paternal age has been associated with reductions in sperm quality and may also influence pregnancy outcomes in some situations. While age-related changes in men are generally more gradual than those seen in women, they remain an important consideration.
Did You Know? Sperm Take Around Three Months to Develop
One fact that surprises many people is that sperm are not produced overnight. The process of sperm development takes approximately three months. This means that the sperm present today actually began developing several months ago. It also means that positive lifestyle changes made today such as quitting smoking, improving nutrition, exercising regularly, reducing alcohol intake, or improving sleep—may result in measurable improvements in sperm health over the following months. While lifestyle changes cannot guarantee pregnancy, they can help create the best possible environment for healthy sperm production.
Why a Semen Analysis Is So Important
A semen analysis is often one of the first investigations recommended during a fertility assessment.
It is a simple, non-invasive test that provides valuable information about sperm health, including:
- Sperm count – the number of sperm present
- Motility – how well sperm move
- Morphology – the size and shape of sperm
These results can help identify potential male factor infertility and guide the next steps in care.
Importantly, a normal semen analysis can also provide reassurance and help focus investigations elsewhere if needed.
Fertility Is a Shared Journey
One of the most important messages in fertility care is that fertility should never be viewed as solely a women’s health issue. Assessing both partners early allows potential concerns to be identified sooner, avoids unnecessary delays, and helps ensure treatment is based on a complete understanding of the couple’s fertility. Whether fertility challenges relate to the man, the woman, both partners, or remain unexplained, a balanced approach gives couples the best opportunity to make informed decisions about their care.
Men’s Health Week: Starting the Conversation
Men’s Health Week is an important reminder that reproductive health is an essential part of overall health. Open conversations about fertility help reduce stigma, encourage earlier assessment, and remind men that seeking support is a positive and proactive step. If you and your partner have been trying to conceive without success, remember that fertility assessment should include both of you. A simple semen analysis may provide valuable answers and help guide the next stage of your fertility journey. Because fertility is not just a women’s issue. It is a shared journey, and both partners deserve to be part of the conversation.