Full-body MRI scans detect brain tumor, sparking debate on preventive screenings

A preventive full-body MRI scan detected a brain tumor in a former reality TV contestant, reigniting debate on the value of such screenings. These expensive scans aim to find diseases like cancer early, but medical experts are divided on their benefit for healthy individuals, citing concerns about false positives and overtreatment. Insurance typically does not cover these scans, which can cost up to $2,500, and regulatory bodies like the FDA have found no evidence of their benefit for asymptomatic people.