Does a body temperature below 98.6 degrees Fahrenheit indicate sickness?

While a body temperature below 98.6 degrees Fahrenheit does not necessarily indicate sickness, affected individuals may feel fatigue as the body temperature is not at optimal level for enzyme function, as reported by Dr. Emily Kane. A body temperature below 98.6 F can be an indication of Wilson's Temperature Syndrome.

Body temperatures that are below 98.6 F inhibit the biochemical processes in the body, which include:

• digestion
• tissue repair
• information transfer
• an effective immune response

A low body temperature may also indicate that the thyroid is not functioning at an optimal level, which may result in fatigue, cold intolerance and the inability to lose weight.