The reaction to these revelations focused on social justifications, such as the perceived inability of men to articulate and deal with their worries. But could it be that men are less happy than women because we are born this way?

Dr Alberto Pertusa, a Consultant Psychiatrist and mental health researcher with the Cambian Group, suggests as much. He believes that, whilst small, the biological differences in how male and female brains are wired may explain significant disparities in gender behaviour, such as our capacities to feel happiness.

"Both sexes have, according to research in both neuroimaging and mirror neurons, the same ability to show empathy, to identify and experience our own and others’ emotions," says Dr Pertusa. "However, it appears that it is easier for men to ‘suppress' this emotional response. This is believed to have an evolutionary advantage that stems from our Palaeolithic ancestors having to overcome their emotional or fearful response when hunting or fighting.