Artificial intelligence tools have been shown to help doctors detect pre-cancerous growths in the colon—but don’t even think about taking those tools away once you’ve introduced them. A new study published this week in The Lancet found that doctors who are given AI tools to assist with identifying potential cancer risks in patients get worse at making those same observations when they go back to doing it without AI’s help.

But a new study has found that doctors who regularly used AI actually became less skilled within months. The study, which was published on Wednesday in the Lancet Gastroenterology and Hepatology journal,

Artificial intelligence, touted for its potential to transform medicine, led to some doctors losing skills after just a few months in a new study.