What percentage fo people have cancer in the world?

The percentage of people who have cancer in the world varies over time and across different regions due to factors such as age, lifestyle, environmental influences, and access to healthcare. According to the World Health Organization (WHO), cancer is the leading cause of death worldwide, accounting for around 10 million deaths in 2020.

In terms of prevalence, it is estimated that about 1 in 5 people worldwide will develop cancer at some point in their lifetime. Cancer incidence rates are generally higher in older age groups. However, some types of cancer, such as leukemia and certain childhood cancers, occur more frequently in younger individuals.

Additionally, cancer prevalence and incidence rates can differ among countries and regions, influenced by variations in risk factors, screening practices, and healthcare systems. Certain regions such as North America, Europe, and Australia have higher cancer rates compared to some parts of Africa and Asia.

It is important to note that these statistics represent global averages and may not always reflect the cancer prevalence or incidence in specific countries or populations. Continuous research, data collection, and monitoring are essential for understanding the burden of cancer and implementing effective prevention and control strategies.