We know that sperm are very susceptible to damage! Taking up to four months to form, they're adversely affected by a host of dietary, lifestyle and environmental factors. Alcohol, cigarettes, exposure to chemicals and heavy metals, heat, tight underpants and nutritional deficits are all well documented to compromise sperm health. The good news is - remove all the bad guys during that four month period and add all the factors that are known to improve sperm health and voila - much healthier and more robust little swimmers. But now, a study from the Queen's Medical Research Institute in Edinburgh gives men with poor quality sperm something else to think about. Richard Sharpe, a fertility researcher at the Institute has demonstrated that male sperm production could be more affected by the lifestyle choices that his mother made when he was in the womb than by his own.