Several risk factors, including obesity, smoking, alcohol, red or processed meat, non-steroidal anti-inflammatory drugs (NSAIDs), diet, micronutrients (like calcium and vitamin D), physical activity, and chronic conditions (e.g., diabetes), have been linked to colorectal cancer (CRC) at all ages. However, only a few studies have explored their effects on early-onset CRC. No studies have yet examined the impact of diet, micronutrients, or NSAIDs, key factors given population shifts in these areas as CRC rates rise. Population-based studies are crucial to identify lifestyle and environmental risk factors for early-onset CRC :no_entry: