Men planning to father children have been strongly advised to marry and start a family before turning 40.
Medical experts warn that delayed fatherhood increases the risk of weak sperm and genetic disorders in children.
In an exclusive interview with PUNCH Healthwise, the President of the Nigerian Association of Urological Surgeons, Professor Nuhu Dakum, explained that male fertility sharply declines with age.
He stressed that sperm quality begins to deteriorate after 40, leaving children more vulnerable to inherited health conditions.
According to him, “Sperm quality reduces with age. The count, motility, and morphology are all affected. There is also an increase in DNA damage, which predisposes babies to genetic diseases.”
Why Men Over 40 Face Higher Risks
Professor Dakum revealed that several factors contribute to poor sperm quality as men grow older.
These include natural biological changes, smoking, alcohol abuse, poor nutrition, and exposure to toxins at work or in the environment.
He emphasized that while sperm decline can vary from man to man, the drop becomes significant around 40.
This means men who delay starting families until middle age could struggle with infertility and pass on genetic risks.
The concern gained fresh attention after a viral post on X (formerly Twitter) sparked a heated debate.
The post claimed that older men produce weak sperm that increases the chances of children developing genetic mutations such as autism, Down syndrome, schizophrenia, and dwarfism.
Medical experts say these claims have some truth.
The Texas Fertility Centre has confirmed that sperm quality and quantity decline with age, leading to age-related male infertility.
Similarly, Healthline, a trusted medical portal, reports that men over 50 experience a significant drop in sperm quality, with sperm count and unhealthy lifestyle habits playing key roles in the decline.
Healthy Living Can Improve Sperm Strength
Professor Dakum, however, clarified that older men can still father healthy children if they maintain good sperm health.
He stressed that healthy living benefits both general well-being and sperm quality.
He said, “There may not be much to prevent if the man is already old, but living healthy improves general health and sperm health.
Options like embryo genetic selection or sperm DNA testing can reduce risks, though these are costly and not widely available. Donor sperm is also an option for couples facing such challenges.”
What This Means for Nigerian Men
The warning is clear: delaying fatherhood comes with health risks for both fathers and children.
Men who prioritize career or wealth before family may unknowingly endanger their future children’s health.
Medical experts now urge Nigerian men to plan early, get married before 40, and adopt a healthier lifestyle to protect their fertility.
With infertility cases rising in Nigeria, the advice serves as a wake-up call.
Alcohol consumption, smoking, poor diets, and late marriages are becoming common among Nigerian men. But experts insist that fertility should not be left to chance.
Starting a family earlier in life, avoiding harmful habits, eating well, and reducing exposure to toxins remain the most effective ways to preserve fertility.
For men who are already older, fertility specialists recommend medical consultations, sperm analysis, and lifestyle changes.
Genetic testing may also help reduce risks when planning for children.
Conclusion
Professor Dakum’s advice highlights an often-overlooked issue in male health. Sperm quality is not permanent, and time works against men just as it does against women.
Nigerian men now face a crucial decision: delay marriage and risk weak sperm, or act early and secure a healthier future for their children.