A study published in The Lancet Gastroenterology & Hepatology examined the impact of AI on endoscopists performing colonoscopies at four medical facilities[1][2][3]. AI marked precancerous polyps (adenomas), helping to remove them and reduce the risk of colon cancer[2][3]. Before the use of AI, endoscopists found adenomas in 28% of unassisted colonoscopies[2]. After three months of regular AI use, their detection of adenomas without AI dropped to 22%[1][2]. The study is the first to provide real-world data on a possible "de-skilling" effect, where doctors have become less motivated, focused and responsible for decisions without AI[1][3]. Experts emphasize the need for further research to prevent the loss of skills and introduce safety measures in human-AI systems[1][3].