Why and where cancer rates are climbing in younger adults while overall cancer rates decline

Researchers at the National Institutes of Health (NIH) have completed a comprehensive analysis of cancer statistics for different age groups in the United States and found that from 2010 through 2019, the incidence of 14 cancer types increased among people under age 50. [T]he total rate of all cancers diagnosed in both younger and older age groups did not increase, nor did the rate of cancer death.

Only five cancer types increased in incidence among one of the younger age groups but not among any of the older age groups: melanoma, cervical cancer, stomach cancer, plasma cell neoplasms (including myeloma), and cancers of the bones and joints.

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The researchers speculated that risk factors such as increasing obesity may have contributed to some of the increases in early-onset cancer incidence in recent years. Changes in cancer screening guidelines, advances in imaging technologies, and increased surveillance of high-risk individuals may also have led to earlier cancer diagnoses, potentially contributing to rising rates among younger age groups.

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