The World Health Organization (WHO) issued its Global Status Report on Cancer 2026 on August 8, warning that annual new cancer cases worldwide could escalate from 20.6 million currently to nearly 35 million by 2050 without urgent action [1, 2]. Currently, cancer causes around 10 million deaths each year, making it the second leading cause of death globally after cardiovascular diseases [1, 2].
WHO Director-General Tedros Adhanom Ghebreyesus said, "Cancer is a deeply personal disease that touches nearly all of us. But whether a person survives cancer should never depend on where they were born or what they earn" [1]. Survival rates vary widely. For example, 87% of breast cancer patients in high-income countries survive at least five years after diagnosis, compared to only about 42% in low-income countries [2, 1]. The global median five-year breast cancer survival rate was estimated at roughly 77.8% for 2017 to 2021 [2].
Asia accounts for over half of global cancer cases and 56.5% of cancer deaths, reflecting its large population [2]. Globally, about 70% of the approximately 694,000 breast cancer deaths in 2024 occurred in low- and middle-income countries [2]. Access to 20 essential cancer medicines remains low, ranging from 9% to 54% in low- and middle-income countries, compared to 68% to 94% in high-income countries [2]. Less than one-third of countries include cancer care in their universal health coverage packages [2, 1].
Nearly 40% of cancer cases link to preventable risk factors such as infections, tobacco, alcohol use, obesity, physical inactivity and air pollution [2, 3]. WHO said, "透過減少接觸可控的風險因素，近40％的新發癌症病例是可以預防的" (Nearly 40% of new cancer cases are preventable by reducing exposure to controllable risk factors) [3]. Since 2010, global tobacco use has declined by 27%, contributing to lung cancer reductions in some regions [2].
Cancer imposes a major financial burden, with at least 45% of patients experiencing financial hardship and over half reporting mental health issues. Nearly all caregivers face strain, including unpaid care and social isolation [2, 1]. The economic costs far exceed medical expenses; investing $1 in cancer prevention and control yields about $9.50 in social return [3].
WHO Director-General Tedros emphasized that the inequalities documented in the report "are not inevitable; they are the result of choices, and can be reversed through stronger unified action" [3]. Elisabete Weiderpass, director of the International Agency for Research on Cancer (IARC), added, "While we are seeing reductions in some cancer rates in countries that have implemented prevention policies, progress has been too slow" [1].
The WHO report calls for urgent global coordination on prevention, diagnosis, treatment, and equitable access to care to mitigate the projected rise in cancer cases and deaths by mid-century [1].
