Prof. Nicholas Wald, director of the Wolfson Institute of Preventive Medicine, says that the whole-body screening services now being offered by various commercial enterprises are a bad idea. Writing in the Journal of Medical Screening he points out that screening of this sort misses most cases of the diseases it is supposed to detect. It also produces plenty of false positives which then require further investigation to rule them out. On top of all this it provides a lot of radiation. We are going to have more and more bogus medicine of this kind, including genetic screening, which is also being touted now.