how does humidity affect the human
Answers
Answer:
when the air has a high moisture content as in the case in humid weather this sweat cannot evaporate leaving our bodies feeling hot and sticky
Explanation:
Higher humidity means more moisture in air
Humidity makes hot weather more unbearable that is , the higher the relative humidity, the higher the temperature actually feels. For instance, a temperature of 95° feels like 95° when the relative humidity is 30%. But at a humidity up to 65% and that same 95° feels like a whopping 117°! A heat index chart factors relative humidity into temperature to provide a more accurate assessment of what the temperature feels , if you look at the chart below it shows you will feel at specific temp and relative humidity
Prefered Human comfort conditions are
75-80F and 40%RH
In such conditions body has its own mechanism to cope with high humidity conditions
High humidity cause the body core temp to deviate
when the core body temperature begins to deviate from the norm, problems can occur.
When outside temperatures approach the temperature of the human body (about 98°) the body undergoes a series of changes to help keep it cool.
Sweating
Altering the rate and depth of blood circulation
Increased respiration
These are measures the body takes in an effort to cool itself down and shed excess heat.
Sweating, one of the key cooling mechanisms of the body, only works to cool us down if the water that is excreted through the skin, evaporates. This is where humidity comes in. The concentration of water in the air, relative to the temperature (relative humidity) determines the rate at which the water can evaporate from the skin. When the air is holding more moisture (relative to the total moisture it could hold at that temperature), it is harder for the air to absorb the sweat from our skin. Thus sweating doesn't cool the body in this conditions it makes you feel all sticky and uncomfortable
In such cases it cause body to over heat and leads to Dehydration , Dehydration depletes the body of water needed for sweating and thickens the blood, requiring more pressure to pump it through the body, thus straining the heart and blood vessels." As blood goes to the external surface of the body, less goes to the muscles, the brain, and other organs. Physical strength declines, and fatigue occurs more quickly than under normal conditions. Mental faculties, such as alertness, may also be adversely affected
These are some of the issue of high humidity, similarly low humidity is also dangerous and can have impact on health.