Core temperature

Core temperature is the temperature of an organism at which it is meant to operate. In humans, the average internal body temperature, also known as normothermia or euthermia, is around 37°C (98.6°F), though it varies among individuals. A very small deviation from this range in either direction can result in significant health problems.

Overview

The core temperature of the human body is maintained near a constant 37°C (98.6°F). This is necessary for the body's metabolic processes to function properly. The body maintains this temperature by balancing heat production with heat loss. This process is known as thermoregulation.

Measurement

Core temperature is most accurately measured via the rectum, vagina, esophagus or ear. Other common sites for measuring body temperature include the mouth, under the arm, and on the forehead, but these methods may not be as accurate.

Factors affecting core temperature

Several factors can affect the body's core temperature, including the time of day, the body's activity level, and the individual's age, sex, and reproductive status. Illness, injury, or exposure to extreme temperatures can also affect core temperature.

Abnormal core temperatures

A core temperature below 36°C (96.8°F) is considered hypothermia, while a temperature above 37.5–38.3°C (99.5–100.9°F) is considered fever. Both conditions require medical attention.

See also

• Body temperature
• Fever
• Hypothermia
• Hyperthermia
• Thermoregulation

Core temperature Resources
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