Is Obesity a Risk Factor for Male Infertility?

In recent years, the topic of male infertility has gained increasing attention in the field of reproductive medicine. As the medical director of the Fertility Institute of San Diego, Dr. Minoos Hosseinzadeh is committed to providing comprehensive care and education on all aspects of fertility, including the impact of obesity on male reproductive health. This article explores the relationship between obesity and male infertility and what can be done to mitigate its effects.

Understanding Male Infertility

Male infertility refers to a man’s inability to contribute to conception with a female partner, which can be due to various factors affecting sperm production, function, or delivery. It accounts for approximately 40-50% of all infertility cases.

The Link Between Obesity and Male Infertility

Obesity is a growing global health concern, and its impact on fertility is an area of active research. Studies have shown that obesity can be a significant risk factor for male infertility due to its effects on hormone levels, sperm quality, and overall reproductive function.

Hormonal Imbalances: Obesity can lead to an imbalance in sex hormones, particularly a reduction in testosterone levels, which is crucial for sperm production.
Sperm Quality: Excess body fat is associated with decreased sperm count, concentration, and motility, as well as an increase in sperm DNA damage.
Erectile Dysfunction: Obesity is a known risk factor for erectile dysfunction, which can further complicate fertility issues.
Heat Stress: Increased adipose tissue in the groin area can raise scrotal temperature, which negatively affects sperm production and quality.

Addressing Obesity-Related Male Infertility

The good news is that obesity-related male infertility can often be improved with lifestyle changes. Here are some steps that can be taken:

Weight Loss: Even a modest weight loss of 5-10% can improve hormonal balance and sperm quality.
Dietary Changes: A balanced diet rich in fruits, vegetables, lean proteins, and whole grains can support overall health and fertility.
Regular Exercise: Physical activity can help reduce obesity and improve reproductive function.
Medical Management: In some cases, medication or surgery may be recommended to address obesity and its related health issues.

Seeking Professional Help

If you suspect that obesity is impacting your fertility, it’s important to seek professional advice. A fertility specialist can provide a comprehensive evaluation and recommend a personalized treatment plan to address any underlying issues.

Obesity is a significant risk factor for male infertility, but it’s one that can often be managed with lifestyle changes and medical intervention. At the Fertility Institute of San Diego, Dr. Minoos Hosseinzadeh and her team are dedicated to helping individuals and couples overcome fertility challenges and achieve their family-building goals.

If you’re ready to start your fertility journey, please book a complimentary virtual consultation with Dr. Hosseinzadeh, to go over fertility options or any other reproductive healthcare questions, click here.


Eisenberg, M. L., & Kim, S. (2017). The role of obesity in male infertility. Current Opinion in Obstetrics and Gynecology, 29(3), 202-207.
MacDonald, A. A., Herbison, G. P., & Showell, M. (2020). The impact of body mass index on semen parameters and reproductive hormones in human males: a systematic review with meta-analysis. Human Reproduction Update, 26(3), 393-409.
Sermondade, N., Faure, C., Fezeu, L., Shayeb, A. G., Bonde, J. P., Jensen, T. K., & Czernichow, S. (2013). Obesity and increased risk for oligozoospermia and azoospermia. Archives of Internal Medicine, 172(5), 440-442.

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