- By: Jananam
- March 17, 2025
4 Common lifestyle causes of male infertility
The four lifestyle causes of male infertility with the clearest evidence are smoking, excess alcohol, obesity and heat exposure. Male factor contributes to roughly 40 to 50 percent of infertility worldwide, and because sperm production takes about seventy-four days, changes made two to three months before testing or treatment can meaningfully alter the sample.
What is male factor infertility?
Male factor infertility means a problem with sperm production, quality or delivery that reduces the chance of conception. It contributes to roughly a third to a half of all cases, and is assessed with a semen analysis measuring count, motility and morphology.
Men, you need to take care of your lifestyle before it affects your fertility. These are the four factors that impact your fertility
Infertility. Something that knows no gender. Something that can disrupt self confidence, mental health, and even relationships at times. It used to be something that was blamed solely on the female half of the couple, sometimes still is, but the male partner could have a significant role to play in a couples’ childlessness as well. About 72.4 million couples around the world face infertility, out of which 40-50% is because of male factors. In India, the numbers scale to male infertility behind almost 40% of total infertility cases, the other 40% is due to female factors and the remaining 20% is reasons unknown.
But what is causing male infertility? Let’s skim through some of the major malefactors behind male infertility caused by their lifestyle.
- Psychological stress
We know infertility can cause stress: the social pressure, tests, diagnosis, treatments, failures, unfulfilled desires, and sometimes financial pressure. But is there any truth in stress causing infertility? There is no general consensus on measuring the impact of mental stress on male infertility, but stress, physical, biological or emotional, can reduce the potential of male infertility. Stress can reduce the Luteinizing Hormone (LH) and testosterone pulsing, which in turn reduces spermatogenesis and sperm quality.
- Obesity
The BMI of the male partner plays an important role in determining his fertility. With increased weight, a man risks lower testosterone, poor sperm quality and therefore reduced fertility as compared to men with a healthy weight. The odds of infertility increase by 10% with every 9 kgs. Thankfully, with regular exercise and a healthy diet, BMI can be maintained to a healthy level.
- Alcohol, Smoking and recreational drugs
Smoking is responsible for causing DNA damage, aneuploidies, and mutations in sperm cells, which in turn causes the reduction in semen quality, impairment in spermatogenesis, sperm maturation, and normal sperm function.
Meanwhile, chronic consumption of alcohol can result in decreased semen quality and decrease in male reproductive hormones and eventually decreased spermatogenesis.
As far as recreational drugs are concerned, excessive marijuana smoking causes lower sperm count and lower sperm concentration. Cocaine is not only highly addictive, it is also responsible for sperm with abnormal morphology, lower motility and lower concentration.
Maybe lay off all these while looking to be a parent?
- Illnesses
Sometimes, some illnesses can gravely affect fertility. Varicoceles can reduce sperm quality and quantity, by causing swelling of the veins around the testes. Some infections can cause interference with sperm production, health and even block the sperm passage. These infections may include STDs such as HIV and gonorrhoea.
Some tumours and cancers and their treatments can leave behind infertility. Genetic disorders such as Klinefelter’s syndrome or Kallmann’s syndrome can cause abnormal development of male reproductive organs.
These are a few of the major factors that contribute to male infertility. Fortunately, most of them can be reversed with treatments. Talk to your fertility specialist if you suspect having infertility problems. Early diagnosis and treatments can be worthwhile decisions to take. Let’s hope you make the right decision and seek help early so that your dream of parenthood comes true.
References
- Durairajanayagam D. (2018). Lifestyle causes of male infertility. Arab journal of urology, 16(1), 10–20. https://doi.org/10.1016/j.aju.2017.12.004
- https://www.mayoclinic.org/diseases-conditions/male-infertility/symptoms-causes/syc-20374773
- Kumar, N., & Singh, A. K. (2015). Trends of male factor infertility, an important cause of infertility: A review of literature. Journal of human reproductive sciences, 8(4), 191–196. https://doi.org/10.4103/0974-1208.170370
- Katib A. (2015). Mechanisms linking obesity to male infertility. Central European journal of urology, 68(1), 79–85. https://doi.org/10.5173/ceju.2015.01.435
- Rooney, K. L., & Domar, A. D. (2018). The relationship between stress and infertility. Dialogues in clinical neuroscience, 20(1), 41–47. https://doi.org/10.31887/DCNS.2018.20.1/klrooney
- Ilacqua, A., Izzo, G., Emerenziani, G. P., Baldari, C., & Aversa, A. (2018). Lifestyle and fertility: the influence of stress and quality of life on male fertility. Reproductive biology and endocrinology : RB&E, 16(1), 115. https://doi.org/10.1186/s12958-018-0436-9
Which lifestyle factors affect male fertility most?
How does smoking affect sperm?
It is associated with reduced count, motility and normal morphology, and with increased DNA fragmentation. The effect is dose-related, and stopping is one of the more reliably beneficial changes a man can make before treatment.
How much alcohol is too much?
Heavy and regular consumption is associated with lower testosterone and poorer semen parameters. Occasional moderate drinking is less clearly harmful, but reducing intake is sensible in the months before testing or a treatment cycle.
Why does weight matter for male fertility?
Excess weight alters the hormonal balance that supports sperm production and raises the temperature around the testes. Both mechanisms affect semen quality, which is why weight is discussed with the male partner rather than only the female.
Does heat really affect sperm production?
Yes. The testes sit outside the body because sperm production requires a lower temperature. Frequent hot baths, saunas, prolonged laptop use on the lap and some occupational heat exposure are all associated with reduced quality.
How long before treatment should changes be made?
Sperm production takes roughly seventy-four days, so two to three months is the meaningful window. Changes made in the final fortnight before a sample rarely show up in the result.
Can lifestyle changes alone restore fertility?
Sometimes, where these factors are the main contributors. Where there is a structural cause such as varicocele or obstruction, or a hormonal deficiency, lifestyle change supports treatment rather than replacing it.
Related reading
- advanced sperm selection with ICSI and PICSI
- IVF treatment at Jananam Fertility Centre
- choosing a fertility hospital in Chennai
Clinical references
Independent clinical guidance relevant to this topic:
