It designate a plenty or overabundance of Endocrine secretion or Hypo-, is the opposite of hyper-: it means underneath, less than normal, or deficient of Endocrine secretion. It can be seen and range in the bloodstream, and is usually found in higher levels in people whom are athletic. It is also responsible for the brain sending signals for the healing of wounds. It also helps with the bodies’ absorption of iron, by suppressing other hormones and functions.
