EMBARGO LIFTED 08:30 AEST Friday O3 Oct, 2014
A Danish study of 1,221 healthy young men found a link between regular alcohol consumption, even at moderate levels (five units per week), and reduced sperm-quality. They also found a link between alcohol consumption and hormonal abnormalities. However, being abstinent was also linked to sperm problems. The study is observational, so cannot prove definitively that the observed sperm problems were caused by alcohol. The authors recommend that young men avoid regular alcohol consumption.