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Water intoxication can be prevented if a person's intake of water does not grossly exceed their losses. Healthy kidneys can excrete approximately 800 millilitres to one litre of fluid water (0.84–1.04 quarts) per hour. [15] However, stress (from prolonged physical exertion), as well as disease states, can greatly reduce this amount. [15]
The evaporation of the sweat helps cool the blood beneath the skin. It is limited by the amount of water available in the body, which can cause dehydration. [5] Humans adapted to heat early on. In Africa, the climate selected for traits that helped them stay cool.
It says two thirds of the world's population could be under stress conditions. [55] The World Bank says that climate change could profoundly alter future patterns of water availability and use. This will make water stress and insecurity worse, at the global level and in sectors that depend on water. [56]
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While climate change skeptics like Sen. James Inhofe, R-Okla., have pointed to the continued existence of cold weather as a sign that global warming is a threat that humanity need not take ...
Typically pollutants irritate the respiratory system and trigger respiratory conditions such as asthma and chronic bronchitis that make it difficult for them to go outside. During air stagnation events, it is recommended for children, elders, and people with pre-existing health conditions, to stay inside as much as possible and stay hydrated. [8]
Physical activity in extremely hot weather should be avoided. If a person starts to experience over heating, and symptoms of heat syncope, they should move or be moved to a shaded or cool area. It is also recommended to avoid alcoholic beverages in hot weather, because they cause dehydration which may worsen symptoms.