Experts say extreme cycling may impact fertility for some men and women
Fertility experts at the University of Edinburgh explain how intense physical activity and long rides might affect reproductive health.
Extreme exercise lowers female fertility
Professor Colin Duncan states that high levels of training can reduce body fat enough to stop periods. This physiological change switches off the ovaries and reduces fertility for elite athletes. Normal cycling amounts do not cause these effects in women.
Heat affects sperm production in men
Sitting on a saddle for long times raises testicle temperature and can lower sperm counts. This issue mostly matters for men who already have borderline fertility levels. Most regular cyclists will see no difference in their reproductive ability.
Clinics consider lifestyle factors now
Medical professionals look at daily habits when reviewing a patient's sperm sample. They note that abnormalities might link to specific activities like heavy cycling. Doctors advise that good sperm counts usually remain unaffected by moderate riding.
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