The researchers said that the dosage administered to the mice was very close to the recommended dosage for pregnt women. But they cautioned that because the trials are restricted to mice, the results cannot be transferred directly to humans. However, the researchers’ certainty about the harmful effects of paracetamol means it would be improper to undertake the same trials on humans, explained David Mobjerg Kristensen, who was associated with the University of Copenhagen during the study. “In a trial, mice exposed to paracetamol at the foetal stage were simply uble to copulate in the same way as our control animals. Male programming had not been properly established during their foetal development and this could be seen long afterwards in their adult life. It is very worrying,” Mobjerg Kristensen, now associated with the Institut de Recherche en Sante, Environnement et Travail (IRSET) in France, said.