Found this wild note in Science Daily. Read more by clicking on the head line up there.
Sounds like Doc McCoy on Star Trek!
ScienceDaily (2008-01-19) -- A non-invasive diagnostic tool to detect surface cancers quickly and painlessly using technology currently employed by gyms to calculate body composition has been developed by a medical physics researcher. The new diagnostic technique uses bioimpedance spectroscopy to diagnose cervical and skin cancers.