Baby boys of mothers who take painkillers during their pregnancy may have a lower sex drive later in life as a result, US scientists suggest. They found drugs such as aspirin blocked a key chemical important for male sexual behaviour in rats. The University of Maryland researchers say if the same is true in humans, pregnant women should avoid common pain killers when possible. The findings are published in the journal Nature Neuroscience. Professor Margaret McCarthy and her team studied how the male hormone testosterone orders the brain to become masculine during pregnancy.
