Swedish researchers say that women who have babies in autumn and winter have a bigger chance to get depression than those who have babies in spring or summer. The main factor of this phenomenon is sunlight.
The scientist found out that UV rays that have an impact for chemical processes in women brain have relations with depression. They have been watching 2000 women who were having babies throughout the year. All women had to answer questions about their overall state and psychological state after five days, six weeks and six months after they gave births to their babies.
The research has shown that those women having babies in October-December were feeling anxiety, fear, irritation and bad mood in general on average two times more often than women who had babies in April-June. Doctors think that this is related to the sunlight and a lack of vitamin D that we get because of the sun.