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In April 2024, the World Health Organization/International Agency for Research on Cancer (IARC) published the global cancer statistics 2022 in the CA: Cancer Journal for Clinicians. This report focuses on the incidence and mortality of 36 cancers in 185 countries or territories worldwide, analyzing the differences of gender, geographic region, and the Human Development Index (HDI) level. It is estimated that in the year 2022, there were 19.96 million new cancer cases and 9.74 million cancer deaths worldwide. Lung cancer (2 480 301, 12.4%) was the most frequently diagnosed cancer in 2022, followed by female breast cancer (2 295 686, 11.5%), colorectal cancer (1 926 118, 9.6%), prostate cancer (1 466 680, 7.3%), and gastric cancer (968 350, 4.9%). Lung cancer (1 817 172, 18.7%) was also the leading cause of cancer death, followed by colorectal cancer (903 859, 9.3%), liver cancer (757 948, 7.8%), female breast cancer (665 684, 6.9%), and gastric cancer (659 853, 6.8%). With demographics-based predictions indicating that the number of new cases of cancer will reach over 35 million by 2050. The Beijing Office for Cancer Prevention and Control team has collated this report and briefly interpreted it in combination with the current situation of cancer incidence and mortality in China. [ABSTRACT FROM AUTHOR]

Objective To analyse the fractions and trends of cancer burden attributable to population ageing, adult population size, age-specific incidence and case fatality rate in China between 1990 and 2019. Methods We extracted data from the database of Global Disease Burden Study, including the number of cancer cases, deaths and corresponding population of 29 cancer types for Chinese adults aged 25 years and older from 1990 to 2019. Using the cancer deaths in 1990 as a reference, we employed a decomposition method to express cancer deaths as the product of four factors among men and women from 1991 to 2019. The fractions attributable to cancer deaths among total cancer deaths in that year were calculated and its time trends were assessed. Results In 2019, we estimated that there were 2 690 000 cancer deaths among adults aged 25 and older in China. Of which, cancer deaths attributable to population ageing, adult population size, age-specific cancer incidence and case fatality rate were 740 000 (27.5% of total cancer deaths in 2019), 1 091 000 (40.6%), 198 000 (7.3%) and -728 000 (-27.1%), respectively. In 2019, lung cancer, stomach cancer, esophageal cancer, liver cancer and colorectal cancer ranked the top five cancers among population ageing attributable to cancer deaths. For 29 cancer types, the fractions of population ageing attributable to cancer deaths among total deaths of that cancer were ranged from 9.3% to 40.5%. The ageing attributable to cancer deaths and its fractions were increased rapidly since 1997, while those estimates were negative before 1997. Conclusions The population ageing process in China was one of the major contributors to the increase in cancer burden in recent years, which has caused more cancer deaths than that by age-specific cancer incidence. Accordingly, activities toward healthy ageing would be the key to cancer prevention and control. [ABSTRACT FROM AUTHOR]

Objective: To analyse the fractions and trends of cancer burden attributable to population ageing, adult population size, age-specific incidence and case fatality rate in China between 1990 and 2019. Methods: We extracted data from the database of Global Disease Burden Study, including the number of cancer cases, deaths and corresponding population of 29 cancer types for Chinese adults aged 25 years and older from 1990 to 2019. Using the cancer deaths in 1990 as a reference, we employed a decomposition method to express cancer deaths as the product of four factors among men and women from 1991 to 2019. The fractions attributable to cancer deaths among total cancer deaths in that year were calculated and its time trends were assessed. Results: In 2019, we estimated that there were 2 690 000 cancer deaths among adults aged 25 and older in China. Of which, cancer deaths attributable to population ageing, adult population size, age-specific cancer incidence and case fatality rate were 740 000 (27.5% of total cancer deaths in 2019), 1 091 000 (40.6%), 198 000 (7.3%) and -728 000 (-27.1%), respectively. In 2019, lung cancer, stomach cancer, esophageal cancer, liver cancer and colorectal cancer ranked the top five cancers among population ageing attributable to cancer deaths. For 29 cancer types, the fractions of population ageing attributable to cancer deaths among total deaths of that cancer were ranged from 9.3% to 40.5%. The ageing attributable to cancer deaths and its fractions were increased rapidly since 1997, while those estimates were negative before 1997. Conclusions: The population ageing process in China was one of the major contributors to the increase in cancer burden in recent years, which has caused more cancer deaths than that by age-specific cancer incidence. Accordingly, activities toward healthy ageing would be the key to cancer prevention and control.