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Not so long ago, large families were common, and conception often occurred with apparent ease. Today, however, many couples face significant challenges in conceiving even one child. So, what has changed? This article aims to explore and demystify this increasingly common yet often unspoken burden.
Infertility is a common issue affecting 1 in 6 people globally, with male factors contributing significantly (40–50% worldwide, up to 42% in Nepal). There is a strong social stigma, particularly in Nepal, where women are often wrongly blamed. It is important to understand that fertility is a shared process involving both partners.
To put it simply, male infertility means a man has a lower chance of naturally getting his female partner pregnant, assuming she is known to be fertile. It is a common medical condition where something is not quite right with the body’s ability to create or deliver healthy sperm successfully.
Infertility is a shared medical condition, not a personal failure,
and certainly not a burden for women alone.
It is really important to remember that infertility is not about anyone failing; it is a medical condition, just like any other.
Reasons for Declining Fertility Rates (The “Why”)
“Today’s couples face a unique challenge: they are starting later in life (the age factor) while simultaneously navigating a more chemically complex world (the environmental factor). Our job is to help them overcome both of these modern hurdles.”
Waiting Longer
Couples delay starting families due to career, education, and financial priorities, leading to older parental age where fertility naturally declines.
Dropping Sperm Quality
Biological and environmental factors, such as “hormone disruptors” from chemicals, obesity, and unhealthy lifestyles (sedentary habits, untreated health issues), negatively impact sperm health.
Understanding the ‘Sperm Factory’
Imagine the male reproductive system as a small, highly specialized factory whose sole purpose is to produce and deliver the necessary “ingredient” — the sperm — for conception. If a couple is struggling to conceive, it means something is going wrong at one of three stages in this process.
The ‘On’ Switch
The brain is in charge of this entire process, with hormones, especially Testosterone and FSH, acting as the “on/off switch” or the “Factory Manager.” These hormones send signals from the brain to the testicles, instructing them to start and continue making sperm. If this switch is not working correctly, the factory sits idle, resulting in very little or no sperm production; this indicates a hormonal problem.
The Factory Floor
The testicles are analogous to the main “Sperm Factory,” working around the clock to produce sperm. Here, issues can arise from several factors. Genetic problems, for instance, mean that even if the “manager” (brain) sends the “on” signal, the “factory machinery” is missing or broken, leading to no production — a condition known as primary testicular failure.
Additionally, physical damage, such as a varicocele, can be likened to a “heating problem” within the factory, which can damage the machinery and slow down sperm production.
The Warehouse and Shipping Department
(Epididymis, Vas Deferens & Ejaculation)
Once produced, sperm move to a “warehouse” where they mature, subsequently traveling through long “transport pipes” for shipping. Issues can arise at this stage, leading to two main problems.
An Obstruction Problem occurs when the “factory” (testicles) produces sperm correctly, but the “pipes” are blocked, preventing their onward movement.
Alternatively, a Shipping/Ejaculation Problem signifies a failure in the delivery process itself, encompassing conditions like retrograde ejaculation and anejaculation. In these scenarios, the factory functions properly, but the final “product” is not delivered as intended.
The Factory’s Schedule: The 3-Month Rule
The “3-month rule” in the sperm cycle refers to the approximate time it takes for a sperm cell to develop fully and be ready for ejaculation. Understanding this rule is crucial for diagnosing and treating male infertility because it dictates the timeline for assessing the effectiveness of lifestyle changes or medical treatments.
Any positive lifestyle change made today will not show up in a semen analysis for at least three months.
The journey starts in the testicles, where stem cells divide and mature into immature sperm. These sperm then move to the epididymis, where they train to swim (gain motility) and are stored. Factoring in minor variations and transport, the entire process takes 64–74 days.
When Should You Consult a Doctor?
You should consult a fertility specialist or an andrologist if you have been having regular, unprotected intercourse for 12 months and your partner has not become pregnant (or 6 months if she is over 35). Additionally, you should consult a doctor immediately if you have any known risk factors.
Primary Risk Factors for Male Infertility
Lifestyle:
Overheating (hot tubs, laptops), excess weight, substance use (smoking, heavy alcohol, drugs), and the “Testosterone Trap” (anabolic steroids, testosterone supplements) are largely preventable.
Medical & Historical:
Varicocele (most common correctable cause), past surgeries, sexually transmitted infections, mumps in childhood, and severe conditions (genetics, cancer treatments) are significant.
What to Expect: Demystifying the First Visit
1. The Conversation & Physical Examination
The first visit is a private, confidential discussion about your health, lifestyle, and sexual history, followed by a physical check-up to identify physical issues like varicocele.
2. The Key Test: Semen Analysis
A semen analysis is the cornerstone test used to evaluate male fertility. It is a laboratory test performed on a man’s freshly ejaculated fluid. It allows us to look at the entire ocean—the fluid—and, more importantly, the swimmers—the sperm—to ensure everything is working correctly for the journey.
“If I Can Get an Erection and Have Sex, I Must Be Fertile”
A common misconception is that if a man can achieve an erection and engage in sexual intercourse, he must be fertile. However, sexual function is entirely separate from sperm quality. A man’s ability to have an erection, ejaculate, and maintain a high sex drive is primarily governed by hormones and nerves. Despite normal sexual function, the sperm within that ejaculate may exhibit issues such as an extremely low count, poor swimming ability, or significant structural abnormalities.
Therefore, while a normal sex life is undoubtedly wonderful, it does not guarantee fertility; only a semen analysis can provide an accurate assessment of sperm health and fertility potential.
Sperm vs. Semen: Swimmers vs. Ocean
Before the main test, it’s vital to understand the difference between sperm and semen. One can think of the ejaculated fluid, the semen, as an “Ocean” that provides nutrition and volume. Within this ocean are the sperm, which can be thought of as microscopic “Swimmers.” A semen analysis, therefore, checks two things: the health of the ocean and the health of the swimmers.
A semen analysis involves laboratory examination of the ejaculate to assess the health of the sperm, often referred to as the swimmers. This assessment typically focuses on what are sometimes called the “3 Cs”:
- Count – the number of sperm present
- Cruise – how effectively the sperm are swimming (motility)
- Craftsmanship – the percentage of sperm with a normal shape (morphology)
Based on these results, further tests, such as blood tests or a scrotal ultrasound, may be warranted. A finding of zero sperm (azoospermia) necessitates immediate evaluation by an andrologist for further testing to rule out an underlying cause.
The Male “Biological Clock”: Peak Fertility
“Age Doesn’t Matter for Men Since They Produce Sperm Throughout Life”
We’ve all heard stories of men fathering children well into their 80s, which gives the impression that a man’s fertility lasts forever. While men continue to produce sperm throughout their lives, their fertility is not eternal—it also declines with age, just in a slower and more subtle way than in women.
Regarding peak fertility years, most studies suggest that the highest quality sperm—characterized by the best movement (motility) and the lowest amount of DNA damage—are produced when a man is in his late 20s to early 30s (roughly age 25 to 35). With advanced paternal age, there is an increased risk of a drop in overall sperm count and motility, as well as an escalation in DNA fragmentation. While the factory never truly shuts down, the product quality and production efficiency gradually decrease.
Secondary Infertility
“If a Man Has Had One Child, He Is ‘Immune’ to Infertility”
Just like any other biological system, fertility is not permanent. The causes for secondary infertility are often new issues that develop after the last conception, such as a new infection, the development of a varicocele, or side effects from new medications or treatments for other conditions.
Fertility can be lost or significantly reduced at any time, as the “sperm factory” can break down or be damaged.
Varicocele
A physical or structural issue causing enlarged veins—the varicocele—that can “overheat” the testicular factory. This is the single most common cause of male infertility that is surgically correctable.
A Simple Guide to Boosting Sperm Health
“If you want to make healthy babies, you have to treat your sperm like they are already your babies—nurture them, protect them, and give them the best possible environment to grow.”
To optimize sperm health, it is crucial to maintain optimal testicular temperature by avoiding excessive heat sources like hot tubs and prolonged laptop use, and by considering looser underwear.
Diet plays a significant role. A Mediterranean-style diet rich in fruits, vegetables, nuts, and healthy fats is recommended to combat oxidative stress, while processed foods should be minimized.
Protecting the reproductive system from toxins is paramount. This means avoiding smoking (cigarettes and marijuana), limiting heavy alcohol consumption, and absolutely refraining from anabolic steroids and testosterone supplements, as these severely impair sperm production.
Finally, optimizing overall body systems is vital. This includes maintaining a healthy weight (even modest weight loss helps), engaging in moderate exercise, managing chronic stress, and ensuring adequate sleep to support hormonal balance.
Exercise should follow the “Goldilocks rule”—too little is detrimental, too much causes stress, but moderate activity is ideal for boosting fertility.
Dr Ishan Malla
He is an uro-oncologist and andrologist, specializing in male reproductive health, including infertility, erectile dysfunction, and other urological cancers. A patient- centered practitioner, he is passionate about transforming the landscape of urology and andrology in Nepal. He is currently associated with Healthy Choice Aesthetic Hospital, Silverline Hospital and Kathmandu Fertility Center.
