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An individual's body temperature typically changes by about 0.5 °C (0.9 °F) between its highest and lowest points each day. [15] Body temperature is sensitive to many hormones, so women have a temperature rhythm that varies with the menstrual cycle, called a circamensal rhythm. [11] [unreliable medical source?
In humans, hyperthermia is defined as a temperature greater than 37.5–38.3 °C (99.5–100.9 °F), depending on the reference used, that occurs without a change in the body's temperature set point. [3] [10] The normal human body temperature can be as high as 37.7 °C (99.9 °F) in the late afternoon. [2]
On the other hand, a "normal" temperature may be a fever, if it is unusually high for that person; for example, medically frail elderly people have a decreased ability to generate body heat, so a "normal" temperature of 37.3 °C (99.1 °F) may represent a clinically significant fever. [37] [39]
A 2022 Outside article on heat stroke cites the highest known body temperature that a human was able to survive: “The highest body temperature measured was only 17 degrees above normal. Willie ...
Sufficient stress from extreme external temperature may cause injury or death if it exceeds the ability of the body to thermoregulate. Hypothermia can set in when the core temperature drops to 35 °C (95 °F). [2] Hyperthermia can set in when the core body temperature rises above 37.5–38.3 °C (99.5–100.9 °F).
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Your body contains systems that tightly regulate your body temperature, keeping it in a healthy zone of about 97 to 99 degrees Fahrenheit. When something minor or severe interferes with that ...
Her body temperature at this point was 13.7 °C (56.7 °F), [19] [20] [21] the lowest survived body temperature ever recorded in a human with accidental hypothermia at the time, [3] [4] [22] Dr. Mads Gilbert, an anesthesiologist and the chief of the hospital's emergency room, proceeded with the resuscitation attempt. [6]