A top Australian medical alliance warns overdiagnosis is exposing healthy people to tests and treatments that are useless at best, and at worst triggers of severe side effects.

A Medical Journal of Australia study released on Monday revealed some of the country’s foremost health experts have laid out plans for national action against overdiagnosis for everything from ADHD to cancer.

Chief Medical Officer Professor Brendan Murphy said strategies for reducing overdiagnosis must empower patients to question the care they are offered and to make informed choices.