Early-Onset Colorectal Cancer Cases Surge in Brazil

A recent analysis by the A. C. Camargo Cancer Center identified a consistent rise in colorectal cancer among Brazilian adults under 50, with an average annual increase of 7.6% between 2000 and 2023. The study, which examined 5,559 diagnosed cases, projects roughly 53,800 new cases each year in the 2026‑2028 period, making it Brazil’s second most common cancer after excluding non‑melanoma skin tumors. Specialists attribute the trend to lifestyle factors such as obesity, sedentary habits, processed‑food diets, alcohol, smoking and microbiome changes, while also emphasizing the need for early detection regardless of age.

Separately, large U.S. cohort studies presented at the ASCO annual meeting linked poor sleep quality to a higher risk of early‑onset cancers, including colorectal, breast, uterine and ovarian cancers. Researchers from Jefferson Health New Jersey and Ochsner MD Anderson Cancer Center reported that individuals under 50 with chronic insomnia faced up to a three‑fold increase in cancer incidence over five years. These findings highlight sleep disturbance as a potentially modifiable risk factor amidst a global rise in cancers diagnosed before age 50.