atmosphere - dynamic shell, which is constantly changing - both seasonal and diurnal.The man, a long time resident of the same locality, as a rule, does not feel these changes, because the body is able to adjust to them in a timely manner under.Therefore, changes in the weather, in addition to the extreme, almost no effect on the state of health of the healthy population.
But there is a category of weather-sensitive people, in which the atmospheric pressure has a very profound impact.Those who suffer from chronic diseases, especially those related to the nervous and cardiovascular system, as changes in the weather difficult to tolerate.Both categories do not feel the pressure of a characteristic of the region, and it is not necessarily normal atmospheric pressure.The latter, incidentally, is not often found in nature.It is believed that it is the force with which a column of atmosphere pressure on a unit area at latitude of 45 degrees and a height of 0 meters (sea level).For normal atmospheric pressure take 760 mmHg.
height With this value is reduced, and there is a special barometric formula for calculating the pressure for any point, knowing its height.For example, for Moscow with an average height of 156 meters is the value of 746 mm.This is the norm for the area, but not the normal atmospheric pressure - these concepts need to be distinguished.
Being in conditions of high pressure, can not see any change, because it is not very different from the usual.Only at extremely high value changes begin to appear: the breath becomes rare, but more profound, is immaterial dulled sense of smell, hearing and lowered his voice muted, appears dry mucous and a slight numbness of the skin.But all these signs is relatively easy to carry.
are more severe periods of sharp changes in pressure - compression (increase) and especially decompression (reduction to normal).When the pressure increases the amount of gases dissolved in the blood, and with the rapid transition back to the reduced value of the excess of these gases (mostly nitrogen) accumulates in the blood.Gas bubbles clog blood vessels, becoming the cause of many diseases.Therefore, the slower these changes take place, the better it adapts to the human body.
Influence of barometric pressure sensed everyone who overcame notable elevation.In the mountains after the mark of 2500 meters neakklimatizirovanny person feels weak due to oxygen starvation.Quickens and deepens breathing, frequent heart rate, lowers blood pressure.All this is the effect of the height, and as a result, low pressure, causing a painful condition as hypoxia or mountain sickness.This phenomenon can be overcome, having acclimatized and accustomed to the new conditions of the body.It is noteworthy that the mountain people do not feel the sickness, living all his life in the altitude of 2000 meters or more - for their low blood pressure is normal.
But not necessarily go to the mountains or to fall into extreme conditions.Pressure drops can be quite painful and in his hometown, especially for people with poor health.To this we must be prepared.When the forecast significant deterioration in the weather, it is desirable to reduce the physical load, do not panic and try to ensure peace.If adaptation usually occurs difficult, it is better to take the means recommended by a doctor.
Also, do not forget that the normal atmospheric pressure is not a normal climate in any terrain.For each region, depending on the height, the characteristic pressure will vary.
