Dexa Scan or Dual X-ray Absorptiometry is a test for assessing bone density. Bones form an extremely important part of our body. Without them we cannot expect to be doing even half of our routine tasks everyday. Bones store crucial nutrients like lipids and minerals. They also grant mobility and support to the entire body. Undergoing Dexa scan for safeguarding the health of your bones goes a long way in ensuring you lead a healthy life minus any major diseases that could render you immobile.