World Cancer Day is a global observance that helps raise people’s awareness of cancer and how to prevent, detect, or treat it. This event is held on February 4 each year.

Cancer is a leading cause of death around the world, according to WHO, which estimates that 84 million people will die of cancer between 2005 and 2015 without intervention. Low-income and medium-income countries are harder hit by cancer than the high-resource countries. It is essential to address the world's growing cancer burden and to work on effective control measures.

Source: https://www.timeanddate.com/holidays/un/world-cancer-day