The practice of giving testosterone to men when the testes do not produce enough testosterone. This may be due to absence, injury, or disease. Over supplementation has serious side effects.
Testosterone is available in oral, IV, patch forms, and implantable pellets. There is no known indication for testosterone in women, it was considered as a treatment for decreased libido, but no controlled studies have demonstrated efficacy.
- Thermally induced asthma
Asthma that is “triggered” by vigorous physical activity. Exercise-induced asthma tends particularly to affect children and young adults (because of their high level of physical activity) but can occur at any age. Exercise-induced asthma is initiated by the process of respiratory heat exchange (the fall in airway temperature during rapid breathing followed by rapid reheating […]
This feat is conventionally credited to the renowned Italian astronomer and physicist, Galileo (1564-1642). Galileo’s instrument, built about 1592, used an inverted glass vessel in which changes of temperature caused the expansion and contraction of the air within it thus changing the level of the liquid in the partially filled vessel’s long, open-mouthed neck. The […]
- Thermometer, ear
A thermometer that registers body temperature via the ear canal. The ear thermometer was invented in 1964 by Dr. Theodor H. Benzinger. Dr. Benzinger worked from 1947 to 1970 at the Naval Medical Research Institute in Bethesda, Maryland where he studied temperature regulation and helped create the field of biothermodynamics. He created the ear thermometer […]
An abnormal and persistent fear of heat, including hot weather and hot objects. Sufferers from thermophobia experience anxiety even though they realize their fear is irrational. To avoid heat, they may live in a cold climate, wear light clothing, stay indoors on warm days, and avoid hot water and hot foods. “Thermophobia” is derived from […]
A device that monitors temperature and automatically maintains it at certain levels. In a human, a tiny part of the brain called the hypothalamus, located behind the eyes, serves as the thermostat. It can warm the body by causing it to shiver and cool the body by causing it to perspire. The hypothalamus also regulates […]