Prenuvo founder Andrew Lacy claims its full-body MRI finds life-threatening conditions in 1 in 20 people, but critics argue the tests are expensive and lead to overdiagnosis. The Polaris Study followed 1,011 patients, finding 41 required biopsies, with 68% diagnosed with cancer.

However, research shows 95% of asymptomatic patients have abnormal findings, but only 1.8% are actual cancer, highlighting the high false positive rate. Dr. Daniel Sodickson emphasizes context, advising against scrambling to interpret data alone and recommends repeating scans to track trends instead of relying on a single snapshot. The emotional and financial costs of unnecessary tests are significant concerns, with influencer promotion skewing perceptions. 87% of social media posts about such tests offer a positive spin, per a JAMA study, despite the 1.6% confirmed cancer detection rate in screening populations.