No solid scientific studies have shown that getting a full-body MRI scan when you feel fine helps you live longer.

This study checked if screening for ovarian cancer in healthy women saves lives, and it didn’t — even though it found more early cancers. That supports the idea that screening healthy people (like with whole-body MRI) doesn’t necessarily make them live longer.

This study looked at using full-body MRI scans to find cancer in healthy people, but found no proof that it helps people live longer — which is exactly what the claim says.

This study looked at whether whole-body MRI can find cancer in healthy people (it found about 1.6% had cancer), but it didn't study whether finding cancer early actually helps people live longer. The researchers explicitly said there's no information about long-term outcomes like lifespan, which matches what the claim says—that there's no proof MRI screening saves lives.