Lifestyle 'has little impact on fertility' - Herald Scotland

The new research found that men with unhealthy lifestyles produced as much swimming sperm as those living more sensibly.

Under current guidelines, doctors are supposed to warn men diagnosed with infertility of the dangers of alcohol, tobacco and recreational drugs. Infertile men are also urged to avoid being overweight and not to wear tight underwear. In some cases, fertility treatment is delayed to allow couples time to improve their lifestyles.