At 6:30 it's about a specific test for thyroid cancer, which as discussed in my second paragraph, was not found to actually improve outcomes for that specific t

At 6:30 it's about a specific test for thyroid cancer, which as discussed in my second paragraph, was not found to actually improve outcomes for that specific type of cancer, not cancer in general. However, early detection is responsible for greatly improving outcomes in many specific cancers. Full body MRI is not the test to achieve that. GRAIL's gallery test might be one to do it for many classes of cancer, but that still remains to be fully seen. The general of idea of early detection is still an extremely promising one for most types of cancer, and in particular for some of the deadliest, like ovarian and pancreatic cancer.