Poor sperm quality linked to air pollution

Study finds 'strong association' between high levels of fine particulate matter and abnormal sperm shape - but impact on wider fertility remains unclear

High levels of air pollution are associated with poor sperm quality and could be partly responsible for the sharp drop in male fertility, according to a new study.

A team of scientists, led by researchers from the Chinese University of Hong Kong, studied the sperm of nearly 6,500 men and found a "strong association" between high levels of fine particulate air pollution and "abnormal sperm shape."