The study, conducted by Dr Demid Getik, explores how mental health is related to income make-up within couples by examining the link between annual income rises for women and the number of clinical mental health diagnoses over a set period of time.

The study finds that as more women take on the breadwinner role in the household, the number of mental health related incidences also increases.

As wives begin earning more than their husbands, the probability of receiving a mental health diagnosis increases by as much as 8% for all those observed in the study, but by as much as 11% for the men.