(GNB Desk): Female breast cancer has surpassed lung cancer as the most commonly diagnosed cancer, while lung cancer remains the most deadly, the American Cancer Society announced Thursday.
Cancer ranks as a leading cause of death in every country in the world, and, for the first time, female breast cancer is the most commonly diagnosed cancer, overtaking lung cancer, according to a collaborative report, Global Cancer Statistics 2020, from the American Cancer Society (ACS) and the International Agency for Research on Cancer (IARC). Data show that 1 in 5 men and women worldwide develop cancer during their lifetime, and 1 in 8 men and 1 in 11 women die from the disease.
In 2020 alone, as the world battled COVID-19, A new study found that last year there were an estimated 19.3 million new cancer cases and almost 10 million deaths attributed to cancer. Female breast cancer was the most commonly diagnosed accounting for 11.7 percent of cases, followed by lung (11.4 percent), and colorectal (10 percent).
The report, authored by scientists from the American Cancer Society and the International Agency for Research on Cancer, said Female breast cancer was the most commonly diagnosed cancer, with an estimated 2.3 million new cases (11.7%), followed by lung (11.4%), colorectal (10.0%), prostate (7.3%), and stomach (5.6%) cancers.
The incidence of breast cancer is increasing in countries where rates of breast cancer have been historically low. “Dramatic changes in lifestyle and built environment have had an impact on the prevalence of breast cancer risk factors such as excess body weight, physical inactivity, alcohol consumption, postponement of childbearing, fewer childbirths, and less breastfeeding,” the report said. “The increasing prevalence of these factors associated with social and economic transition results in a convergence toward the risk factor profile of transitioned countries and is narrowing international gaps in the breast cancer morbidity.”
Data show that lung cancer remained the leading cause of cancer death with an estimated 1.8 million deaths (18%), followed by colorectal (9.4%), liver (8.3%), stomach (7.7%), and female breast (6.9%) cancers. Lung cancer death rates are 3 to 4 times higher in transitioned countries than in transitioning countries, however, this pattern may well change as the tobacco epidemic evolves given that 80% of smokers reside in low- and middle- income countries. With about two-thirds of lung cancer deaths worldwide attributable to smoking, the disease can be largely prevented through effective tobacco control policies and regulations.
According to the report, an estimated 28.4 million new cancer cases are projected to occur in 2040, a 47% rise from 2020 globally. Transitioning countries are experiencing a larger relative increase in cancer incidence (64% to 95%) versus transitioned (32% to 56%) countries due to demographic changes. The authors state that this may be further exacerbated by increasing risk factors associated with globalization and a growing economy. The authors warn that the growing rate of incidence could overwhelm health care systems, if left uncontrolled. Efforts to build a sustainable infrastructure for the dissemination of proven cancer prevention measures and the provision of cancer care in transitioning countries are critical for global cancer control.
Source: American Cancer Society
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