Health and Me

Ishita Roy

4 In 10 Cancer Cases Could Be Prevented, Says WHO

A new global analysis by the <span>World Health Organization</span> and its <span><a href="https://www.healthandme.com/health/cancer">cancer</a></span> research arm, the International Agency for Research on Cancer, has found that prevention could dramatically reduce cancer cases worldwide. The report estimates that 37 percent of all new cancers in 2022, about 7.1 million cases, were linked to causes that can largely be avoided.

The findings are based on data from 185 countries and 36 cancer types and were released ahead of World Cancer Day. Researchers examined 30 risk factors including tobacco use, alcohol, obesity, lack of physical activity, air pollution, ultraviolet radiation and nine cancer causing infections. The report stresses that prevention may be the single most powerful tool available to reduce the global cancer burden.

According to <span>WHO</span> data, tobacco remains the biggest contributor, responsible for about 15 percent of all new cancer cases globally. Infections accounted for around 10 percent while alcohol contributed to roughly 3 percent. Three cancers together made up nearly half of all preventable cases worldwide. Lung cancer was strongly linked to smoking and polluted air, stomach cancer to Helicobacter pylori infection, and cervical cancer to human papillomavirus infection.

WHO cancer control experts said the analysis shows clearly how much cancer risk comes from factors people and governments can act on before the disease even develops.

<h2>Differences between men, women and regions</h2>

The report shows clear gender differences. Preventable cancer accounted for 45 percent of new cases among men compared with 30 percent among women. Among men, smoking alone contributed to 23 percent of new cancers followed by infections at 9 percent and alcohol at 4 percent. Among women, infections were the largest contributor at 11 percent, followed by smoking at 6 percent and high body mass index at 3 percent.

The burden also varied widely across regions. In women, preventable cancers ranged from 24 percent in North Africa and West Asia to 38 percent in sub Saharan Africa. Among men, East Asia had the highest share at 57 percent while Latin America and the Caribbean recorded the lowest at 28 percent. Researchers say these differences reflect lifestyle habits, environmental exposures, workplace safety standards and public health policies.

The WHO report highlights practical steps that could reduce cancer cases. These include stronger tobacco control laws, limits on alcohol use, vaccination against HPV and hepatitis B, improved air quality, safer workplaces and promotion of healthier diets and physical activity.

Health officials say coordinated action across sectors such as transport, education, labour and energy can prevent millions of cancer diagnoses and lower long term healthcare costs while improving overall population health.

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A new global analysis by the World Health Organization and its cancer research arm, the International Agency for Research on Cancer, has found that prevention could dramatically reduce cancer cases worldwide. The report estimates that 37 percent of all new cancers in 2022, about 7.1 million cases, were linked to causes that can largely be avoided.The findings are based on data from 185 countries and 36 cancer types and were released ahead of World Cancer Day. Researchers examined 30 risk factors including tobacco use, alcohol, obesity, lack of physical activity, air pollution, ultraviolet radiation and nine cancer causing infections. The report stresses that prevention may be the single most powerful tool available to reduce the global cancer burden.According to WHO data, tobacco remains the biggest contributor, responsible for about 15 percent of all new cancer cases globally. Infections accounted for around 10 percent while alcohol contributed to roughly 3 percent. Three cancers together made up nearly half of all preventable cases worldwide. Lung cancer was strongly linked to smoking and polluted air, stomach cancer to Helicobacter pylori infection, and cervical cancer to human papillomavirus infection.WHO cancer control experts said the analysis shows clearly how much cancer risk comes from factors people and governments can act on before the disease even develops.Differences between men, women and regionsThe report shows clear gender differences. Preventable cancer accounted for 45 percent of new cases among men compared with 30 percent among women. Among men, smoking alone contributed to 23 percent of new cancers followed by infections at 9 percent and alcohol at 4 percent. Among women, infections were the largest contributor at 11 percent, followed by smoking at 6 percent and high body mass index at 3 percent.The burden also varied widely across regions. In women, preventable cancers ranged from 24 percent in North Africa and West Asia to 38 percent in sub Saharan Africa. Among men, East Asia had the highest share at 57 percent while Latin America and the Caribbean recorded the lowest at 28 percent. Researchers say these differences reflect lifestyle habits, environmental exposures, workplace safety standards and public health policies.The WHO report highlights practical steps that could reduce cancer cases. These include stronger tobacco control laws, limits on alcohol use, vaccination against HPV and hepatitis B, improved air quality, safer workplaces and promotion of healthier diets and physical activity.Health officials say coordinated action across sectors such as transport, education, labour and energy can prevent millions of cancer diagnoses and lower long term healthcare costs while improving overall population health.