AMA #40: Body composition, protein, time-restricted feeding, fasting, DEXA scans, and more

There's a unit in radiation that we talk about, and it's usually millisieverts. We talk about how many millisieverts of radiation something offers you ... Radiation, to some extent, is harmful. And so, the NRC recommends that a person receive no more of 50 millisieverts in a year, in a calendar year.

A DEXA scan has no more radiation than even the lowest end of a chest x-ray. And we're talking about, gosh, like 1/20th of the radiation of a mammogram and about half the radiation of a cross-country flight. All that is to say, DEXA is a really safe, low-risk... There's effectively zero risk to a DEXA scan.