World Health Day is on the 7th of April each year. This day marks the anniversary of the World Health Organization which was founded in 1948. The world Health Organization (WHO) is the leading global health authority within the United Nations System. The theme of 2017 World Health Day is “Depression Let’s talk”. More than 30 million people are now living with depression, an increase of more than 18% between 2005 and 2015.