Future-dads are being urged to give up alcohol to reduce the risk of their babies being born with birth defects.
Trinity College Dublin's chair of nursing and midwifery says it's possible alcohol could have an effect on the man's sperm which could pass a problem on to a child.
A newborn's birth weight, cognitive function and overall brain size could be at risk if couples drink alcohol while trying for a baby.
Professor Cecily Begley's suggesting both men and women stay off for booze for a year before trying to conceive, control their weight and also increase their intake of fruit.
