Cancer is a large group of diseases in which abnormal cells grow beyond their usual boundaries and can spread to other organs, a process called metastasis that is the main cause of cancer deaths. IARC estimates that 20.6 million people were diagnosed with cancer in 2024 and 9.8 million died from it, and that about 1 in 5 people will develop cancer during their lifetime. Lung, breast, colorectal and prostate cancer are the most commonly diagnosed, and lung cancer causes the most deaths. WHO estimates that about 38% of cancers could be prevented by avoiding risk factors such as tobacco, alcohol and excess body weight and by vaccination and other proven measures, and that many more can be cured if found early and treated well.
The chance of surviving differs sharply between countries. About 87% of women with breast cancer in high-income countries are alive five years after diagnosis, compared with about 42% in low-income countries, and more than 80% of children with cancer are cured in high-income countries against less than 30% in most low- and middle-income countries. Many countries in Africa and parts of Asia have fewer new cases relative to their population but disproportionately high death rates, and priority cancer medicines are far less available in low- and lower-middle-income countries than in high-income ones. Fewer than one in three countries include cancer care in their universal health coverage packages, and WHO's first survey of people affected by cancer found that at least 45% faced financial hardship.
How the cancer burden is measured
Only some countries have population-based cancer registries covering their whole population, so global figures combine registry data, death records and statistical models. The main measures used on this page are:
New cases (incidence)
The number of people newly diagnosed with cancer in a year. IARC's GLOBOCAN database estimates this for 34 cancer types in 186 countries; global totals often also report figures excluding non-melanoma skin cancer, which is common but rarely fatal.
Cancer deaths and survival
Deaths from cancer in a year, and the share of people still alive a set time after diagnosis, usually five years. Survival reflects both how early cancers are found and whether effective treatment is available.
Cervical cancer elimination
WHO defines elimination of cervical cancer as a public health problem as 4 or fewer new cases per 100,000 women a year. The interim 90–70–90 targets for 2030 are: 90% of girls fully vaccinated against HPV by age 15, 70% of women screened with a high-performance test by ages 35 and 45, and 90% of women with pre-cancer or cancer receiving treatment.
Premature deaths from noncommunicable diseases
SDG indicator 3.4.1 is the probability that a 30-year-old dies before age 70 from cancer, cardiovascular disease, diabetes or chronic respiratory disease. The map on this page shows this combined measure, because no open, country-level and age-standardised measure of cancer deaths alone is available for the whole world.