Irish researchers studied over 8,000 births at a Dublin hospital during a three year period. They found the boys were significantly more likely to need drugs and special instruments to be delivered and that boys also are more likely to require a caesarean section.
The researchers say one reason may be that on the average, boys have larger heads than girls at birth. All the babies studied were single births to first time mothers. The study is published in the British Medical Journal. No differences were seen in length of gestation, or the need for antibiotics during labor. This study was conducted at the National Maternity Hospital in Dublin, Ireland.