The Facts
Hypothermia occurs when you have abnormally low body temperature. Normal body temperature is around 98.6°F, as measured by mouth. Hypothermia is defined as a drop in body temperature below 95°F. Young babies
(because they have a greater surface area to body weight ratio) and
seniors are the most vulnerable to developing hypothermia.
When the body becomes very cold, all physiological systems begin to slow
down - eventually to the point that threatens survival. In some rare
cases, though, hypothermia can save lives. There are cases where children who
have fallen into freezing water were successfully revived even when there was
no heartbeat. Their below-normal temperature slowed down their brain function
and caused their bodies to use less oxygen.
Frostbite happens when a part of the body actually freezes. Mild frostbite
doesn't leave lasting damage, but severe frostbite does cause permanent damage
and may even require amputation of a body part.
Smokers and people with diabetes and other circulatory problems have a higher
risk of developing frostbite.