<p>Much like high blood pressure, hypothermia can be called a "silent killer" in the sense that many of its victims are not aware of the threat. In the case of hypothermia, elderly persons may not be aware they are becoming cold as readily as younger people, and their bodies may not adjust to changes in temperature.
Hypothermia (literally "low-heat") is a condition marked by an abnormally low internal body temperature. It develops when body heat is lost to a cool or cold environment faster than it can be replaced. Temperatures do not have to be below freezing for hypothermia to occur, especially in vulnerable individuals. Many older adults can develop a low body temperature after exposure to conditions of mild cold, which would only produce discomfort in younger people.</p>