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Does biking affect sperm?

This question is about Cycling

Sarah Achleithner

Yes, biking for long periods of time (5 hours or more/week) may be associated with poor sperm motility and low sperm count amongst men [

1

]. In comparison to sedentary males, regular male cyclists have a lower percent of sperm, and studies have shown that even after a 30-day recovery period, male cyclists experience decreased motility, volume, and concentration of sperm [

2

,

3

]. 

Lower sperm count in males might be due to hormonal changes from exercise, leading to lower sperm production and testosterone. It also may be related to male cyclists placing high amounts of weight and pressure on their perineal area (an important structure that supports the pelvic floor), which disrupts the blood flow to the testis [

3

]. Since the testis makes testosterone and testosterone is needed to produce sperm, there appears to be a direct correlation between biking and sperm production.

Many sperm against a burgundy background

People also ask:

[1] Preliminary Study Suggests Frequent Cycling May Affect Male Fertility. Boston University Medical Campus Preliminary Study Suggests Frequent Cycling May Affect Male Fertility Comments. (1959, January 1).

https://www.bumc.bu.edu/2010/12/14/preliminary-study-suggests-frequent-cycling-may-affect-male-fertility/

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[2] Hajizadeh Maleki, B., & Tartibian, B. (2015). Long-term Low-to-Intensive Cycling Training: Impact on Semen Parameters and Seminal Cytokines. Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine, 25(6), 535–540.

https://doi.org/10.1097/JSM.0000000000000122

 

[3] Ruben Alvero, M. D. (2018, June 1). How Bicycling Affects Male Fertility: Denver: University of Colorado. University of Colorado Advanced Reproductive Medicine.

https://arm.coloradowomenshealth.com/doctors-blog/bicycling-affect-male-fertility

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