World Cancer Day is an international day marked on February 4 to raise awareness of cancer and to encourage its prevention, detection, and treatment. World Cancer Day is led by the Union for International Cancer Control (UICC) to support the goals of the World Cancer Declaration, written in 2008.

Each year on 4 February, World Cancer Day empowers all of us across the world to show support, raise our collective voice, take personal action and press our governments to do more.

World Cancer Day, annual observance held on February 4 that is intended to increase global awareness of cancer. World Cancer Day originated in 2000 at the first World Summit against Cancer, which was held in Paris.

World Cancer Day targets misinformation,] raises awareness, and reduces stigma. Multiple initiatives are run on World Cancer Day to show support for those affected by cancer. One of these movements are #NoHairSelfie, a global movement to have “hairticipants” shave their heads either physically or virtually to show a symbol of courage for those undergoing cancer treatment.  Images of participants are then shared all over social media. Hundreds of events around the world also take place