A recent study published in the journal Cancer predicts that global cancer cases in men will increase by 84.3% and the number of cancer deaths will increase by 93.2% by 2050 compared to the 2022 estimate. This alarming trend underscores a significant public health challenge that requires urgent attention.
Key Findings of the Study
- Projected Increase in Cancer Cases and Deaths: The study predicts that cancer cases among men will rise to 19 million by 2050 while cancer deaths are expected to reach 10.5 million.
- Projection of Specific Cancer Types: From 2022 to 2050, mesothelioma (the most common kind of lung cancer) cases are expected to increase by 105.5%, prostate cancer deaths by 136.4%, while testicular cancer will see the smallest rises, with incidents up by 22.7% and deaths by 40%.
- Dominance of Lung Cancer: Lung cancer is expected to remain the leading type of cancer in both incidence and mortality, with a projected increase of over 87% compared to 2022.
- Disparities Across Age and Regions: The report notes significant disparities in cancer rates by age and region, with about 10.3 million cases and 5.4 million deaths among men globally in 2022. Nearly two-thirds of these cases were in adults aged 65 and older.
- Impact of Human Development Index (HDI): The report predicts that cancer cases will increase by 50.2% in very high HDI countries and by 138.6% in low HDI countries from 2022 to 2050. Cancer deaths are expected to rise by 63.9% in very high HDI countries and 141.6% in low HDI countries.
- High Mortality-to-Incidence Ratios: The report highlights high mortality-to-incidence ratios, with older men at 61% and low HDI countries at 74%. Rare cancers like pancreatic cancer have an even higher ratio of 91%, indicating poor survival outcomes. The Mortality-to-Incidence Ratio (MIR) is a measure that compares the number of cancer deaths (mortality) to the number of new cancer cases (incidence) over a specified period.
State of Cancer Prevalence in India
- India reported 1,413,316 new cases in 2022 with a higher proportion of female patients (691,178 men and 722,138 women).
- Breast cancer had the highest proportion in the country, with 192,020 new cases, accounting for 13.6% of all patients and over 26% in women.
- In India, breast cancer was followed by lip and oral cavity (143,759 new cases, 10.2%), cervix and uterine, lung, and esophageal cancers.
- A recent study by WHO assessing the cancer burden in Asia, published in The Lancet Regional Health, found that India alone accounted for 32.9% of global deaths and 28.1% of new cases of lip and oral cavity cancer in 2019.
- This was on account of the widespread consumption of smokeless tobacco (SMT) such as khaini, gutkha, betel quid and paan masala in South Asian countries like India, Bangladesh and Nepal.
- Worldwide, SMT is responsible for 50% of the oral cancer burden.
- As per the Lancet Global Health 2023, India accounted for 23% of deaths that occurred due to cervical cancer globally.
- In India, cervical cancer’s five-year survival rate was 51.7% which is lower compared to high-income countries such as the United States.
Cancer
- It is a complex and broad term used to describe a group of diseases characterised by the uncontrolled growth and spread of abnormal cells in the body.
- These abnormal cells, known as cancer cells, have the ability to invade and destroy healthy tissues and organs.
- In a healthy body, cells grow, divide, and die in a regulated manner, allowing for the normal functioning of tissues and organs.
- However, in the case of cancer, certain genetic mutations or abnormalities disrupt this normal cell cycle, causing cells to divide and grow uncontrollably.