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Colorectal cancer is rising rapidly in Americans under 50, now the top cancer killer in men and second in women in this age group.
Colorectal cancer is rising sharply among Americans under 50, now the leading cause of cancer deaths in men and second in women in this age group, with death rates increasing 1.1% annually since 2005.
Cases in those aged 20 to 39 have risen about 2% per year since the 1990s, and about one in five new diagnoses occur in people under 55.
Experts suspect links to diets high in processed foods, low fiber, obesity, sedentary lifestyles, and gut microbiome changes, though exact causes remain unclear.
While screening guidelines now recommend starting at age 45 for average-risk individuals, the fastest-growing cases are in those in their 20s and 30s, prompting calls for earlier detection and more research.
El cáncer colorrectal está aumentando rápidamente en los estadounidenses menores de 50 años, ahora la primera causa de muerte por cáncer en los hombres y la segunda en las mujeres de este grupo de edad.