Search results
Results From The WOW.Com Content Network
Heat stroke is an acute temperature elevation caused by exposure to excessive heat, or combination of heat and humidity, that overwhelms the heat-regulating mechanisms of the body. The latter is a relatively rare side effect of many drugs, particularly those that affect the central nervous system.
Humidity affects thermoregulation by limiting sweat evaporation and thus heat loss. [6] Humans cannot survive prolonged exposure to a wet-bulb temperature above 35 °C (95 °F). Such a temperature used to be thought not to occur on Earth's surface but has been recorded in some parts of the Indus Valley and Persian Gulf.
[citation needed] When combined with this high humidity, the theoretical limit to human survival in the shade, even with unlimited water, is 35 °C (95 °F) – theoretically equivalent to a heat index of 70 °C (158 °F). [22] [23] Dry heat, on the other hand, can cause dehydration, as sweat will tend to evaporate extremely quickly ...
[24] [25] Prolonged heat exposure, physical exertion, and dehydration are sufficient factors for the development of CKD. [24] [25] The human body requires evaporation of sweat to cool down and prevent overheating, even with a low activity level. With excessive heat and humidity human bodies would no longer be able to adequately cool the skin.
Forecasters expected high temperatures to reach 99 F (37.2 C) to 103 F (39.4 C) through Friday in St. Louis, and the heat’s only part of the problem: Excessive humidity will lead to a heat index ...
A combination of excessive heat and humidity will send ... service to issue an excessive heat warning for the Kansas City metro and areas to the south and west that goes into effect from 1 p.m ...
Excess moisture in buildings expose occupants to fungal spores, cell fragments, or mycotoxins. [48] Infants in homes with mold have a much greater risk of developing asthma and allergic rhinitis. [48] More than half of adult workers in moldy/humid buildings develop nasal or sinus symptoms due to mold exposure. [48]
The effects of noise exposure are highest when it occurs between 15 and 60 days after conception, a period in which major internal organs and the central nervous system are formed. [48] Later developmental effects occur as vasoconstriction in the mother reduces blood flow and therefore oxygen and nutrition to the fetus.