A 15-year analysis of cancer registry data from 42 countries showed that cancer incidence rose among both younger and older adults between 2003 and 2017. Increases were seen for thyroid, breast, colorectal, kidney, endometrial cancers, and leukemia, while stomach, liver, and oral cancers declined. Colorectal cancer rose faster among younger adults in many countries, though few differences between age groups were statistically significant. Researchers noted that screening in older adults and shared risk exposures may explain the trends and called for stronger global cancer surveillance systems.

Source: Annals of Internal Medicine and ACP Journal