Cancer is the generic term for the group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. Other terms used are malignant tumours and neoplasms.
The number of new cases of cancer is expected to rise by about 70% over the next two decades.
The five most common cancers in men in 2012 were prostate, lung, colorectum, stomach and liver.
In women, the most common cancers were breast, colorectum, lung, cervix and stomach.
Smoking is the most important risk factor in cancer, causing around 20% of global cancer deaths and around 70% of lung cancer deaths. Lung cancer caused 1.59 million deaths in 2012.
An estimated 169.3 million years of healthy life were lost globally because of cancer in 2008, according to Cancer Research UK.
In developing countries, cancer-causing viral infections – such as the human papillomavirus – are responsible for up to 20% of cancer deaths.
A person's risk of developing cancer depends on several factors, including age, genetics and avoidable lifestyle factors. Smoking, insufficient physical activity, alcohol and obesity account for a high proportion of cancers around the world.
More than 60% of new annual cases of cancer occur in Africa, Asia and Central and South America – all of which account for 70% of the world's cancer deaths.
Lets Kiss Cancer Goodbye...