World Health Day is celebrated every year on April 7, with particular health-related themes chosen each year and varieties of programs related to it organised on international and national levels.   What's your pledge this World Health Day?   April 7 marks World Health Day. And this year's theme is Our Planet, Our Health.   Every year on April 7th, the World Health Organization (WHO) commemorates the anniversary of its creation in 1948.    Each year, a theme is chosen for this date that highligh...