From TFA:

"in the United States, the incidence of advanced colorectal cancer has increased by about 3% each year since around 2010 in people between the ages of 20 and 49. In 2023, colorectal cancer became the leading cause of cancer death in this age group."

Also in TFA:

"Uterine cancer and liver cancer diagnoses and deaths are rising in young women"

The increases in colorectal and liver cancers seem to point to unhealthy food, probably combined with other factors that reduce the resistance of the body to unhealthy food, like pollution, lack of physical exercise and of good sleep.