Why need to measure atmospheric pressure. How does the atmospheric pressure affect the arterial pressure of a person? High and low atmospheric pressure

Under atmospheric pressure is meant the pressure of the thickness of atmospheric air to the surface of the earth and items located on it. The degree of pressure corresponds to the weight of atmospheric air based on a certain area and configuration.

The main unit of measurement of atmospheric pressure in the SI system is Pascal (PA). In addition to Pascals, other units are also used:

• Bar (1 ba \u003d 100000 pa);
• millimeter mercury pillar (1 mm Hg. Art. \u003d 133.3 PA);
• kilogram of power per square centimeter (1 kgf / cm 2 \u003d 98066 PA);
• technical atmosphere (1 AT \u003d 98066 PA).

The above dimension units are used for technical purposes, with the exception of millimeters of mercury pillar, which serves for weather forecasts.

A barometer acts as the main instrument for measuring atmospheric pressure. Devices are divided into two types - liquid and mechanical. The design of the first is based on a flask filled with mercury and immersed by an open end in a water vessel. Water in the vessel transmits the pressure of the Mercy atmospheric air post. His height and acts as a pressure indicator.

Mechanical barometers are more compact. The principle of their work is concluded in the deformation of the metal plate under the action of atmospheric pressure. The deformable plate presses on the spring, and that, in turn, leads the arrow of the device.

The effect of atmospheric pressure on the weather

Atmospheric pressure and its effect on the weather will be varied depending on the place and time. It changes depending on the height above sea level. Moreover, there are dynamic changes associated with the movement of the areas of high (anticyclone) and low pressure (cyclones).

Changes in weather due to atmospheric pressure occur due to movement of air masses between areas with different pressure. The movement of the air masses form the wind, the speed of which depends on the pressure difference in local areas, their scale and removal from each other. In addition, the movements of the air masses lead to a change in temperature.

Standard atmospheric pressure is 101325 Pa, 760 mm Hg. Art. or 1,01325 bar. However, a person can safely transfer a wide spectrum of pressure. For example, in the city of Mexico City, the capital Mexico with a population of almost 9 million people, the average atmospheric pressure is 570 mm Hg. Art.

Thus, the magnitude of the standard pressure is defined accurately. And comfortable pressure has a significant range. This value is quite individual and completely depends on the conditions in which a specific person was born and lived. Thus, a sharp movement from a zone with a relatively high pressure in the lower-low area can affect the operation of the circulatory system. However, with long acclimatization, there is no negative influence.

Elevated and reduced atmospheric pressure

In the high pressure zones, the weather is calm, the sky is cloudless, and the wind is moderate. High atmospheric pressure in the summer leads to heat and droughts. In low pressure zones, the weather is predominantly cloudy character with wind and precipitation. Thanks to such zones in the summer there is a cool cloud weather with rain, and snowfall happens in winter. High pressure difference in two areas is one of the factors leading to the formation of hurricanes and storm winds.

Pressure (atmospheric) is a physical value expressing, with what force the air masses to earth are put on the ground and everything that is located on it. For each region, mercury pillars are different, since they have an impact - height above sea level, air humidity and air temperature.

The human body adapts to the pressure values \u200b\u200bin the living climatic belt. If there is a change in the indicator into a large or smaller side (moving to another region, changing the weather, travel to the mountains), then deviations from the norm can cause impaired well-being.

The land is surrounded by an atmosphere that consists of several layers and performs protective functions. (Fences from harmful emissions, supports the desired composition in the air, and also keeps all living and non-residential substances on the planet by providing pressure).

To determine the magnitude of the atmospheric pressure, several units are used (mm Hg. Art., Pascali, Millibars). The essence of these indicators is to display the magnitude of the pressure rendered by the atmosphere on a certain section of the surface. A person does not feel atmospheric pressure (under normal indicators), as it is equalized by the liquid located inside the body.

Atmospheric pressure norms in different regions of Russia

The pressure of the mercury pillar (the norm depends on the climatic zone) varies from the region where the indicator is performed. A person adapts to the meaning where he lives. Therefore, when changing the place of residence with other climatic conditions, the deterioration of well-being often occurs.

Atmospheric pressure indicators in mm RT. Art. In large regions of Russia:

Depending on the season of the year, the pressure indicator may vary in a large or smaller side.

Air pressure variability depending on the height of the relief and other conditions

When measuring the pressure indicator, the influence of the main factors should be considered:

• height above sea level. When in one point in geographical parameters, but at different height, the pressure value will be changed to the following hand - when the sea level rise above the sea level, the pressure will decrease, and when lowering it is increased;
• temperature indicator. With a temperature indicator above 0 degrees, the atmospheric pressure will be reduced. At temperatures below 0 degrees, the atmospheric pressure will increase;
• humidity level. Increased liquid content in air is the cause of pressure increase. In dry weather, the pressure indicator falls.

Therefore, in the summer at night (when the temperature decreases and humidity increases) the pressure indicator increases. The main reason for changing the indicators is the change of air density from the effect of these parameters.

Normal air pole pressure in mm mercury and paste

Mercury pillary pressure (the norm is measured at sea level in Paris at 15 degrees air temperature) in 760 mm RT. Art. or 101.3 kPa is the standard of normal indicator. But this value is conditional when comparing its influence on the state of the person. Since the body adapts to the indicator that prevails during the year in the human residence region.

Effect of atmospheric pressure drops on people

The human body is adjusted to the pressure indicator, which prevails in this climatic belt. As a result, the system and organs operate in normal rhythm.

But with a change in the value, there is a perestroika in the body, which is accompanied by the following deviations:

• headaches in the field of temples, dizziness and fainting;
• rapid decline;
• increased irritability due to headaches and fatigue;
• depression or concern for no reason;
• deterioration of breathing (there is a shortage of air);
• violation of the rhythm of heart abbreviations and pain in the heart of the heart;
• lowering / improving blood pressure;
• impairment and "flies" before the eyes due to an increase in intraocular pressure;
• blood circulation disorders accompanied by the numbness of the limbs;
• sustainacles. Caused by violation of blood supply;
• nausea and decreased appetite;
• noise and hum in the ears;
• violation of the activities of the gastrointestinal bodies;
• worsening attention;
• drowsiness.

The deterioration of well-being is observed in atmospheric pressure drops from 5 units.

Daily fluctuations in 1-2 divisions do not affect the functioning of the body. Changes are developing due to a violation of fluid movement in the body, which leads to a failure in the work of all systems and a slowdown of metabolism. If these deviations in the body occur in humans, even with small changes in pressure indicator and regularly, meteo-dependence is diagnosed.

At-risk groups

Pressure (atmospheric) may cause a violation of the state even in healthy people, if the rate of mercury pillar rose or dropped more than 3 divisions within 1-3 hours. After returning atmospheric pressure to the norm, well-being stabilized.

The diagnosis of meteo-dependence is diagnosed more often among the following groups of people:

• men and women of old age. Their body can no longer be quickly rebuilt under atmospheric pressure drops;
• women in the battery period. In this period, the body's forces are aimed at preserving pregnancy and the development of the fetus. As a result, pregnant women feel even small pressure drops;
• children up to 3-5 years. Their body is still learning to react to weather changes;
• teenagers during the restructuring of hormones. In this period, the body is sensitive not only to pressure fluctuations, psycho-emotional equilibrium is disturbed and the immune system is weakened;
• climax period. The body again passes the hormonal restructuring and is sensitive to any changes inside and outside;
• people with kidney disease. This disease causes a violation of water composition in the body, which causes increased sensitivity to pressure fluctuations;
• allergy and asthmatics. Meteo-dependence is caused by a decrease in immunity;
• patients with diseases of the cardiovascular system and suffering from damages of blood pressure;
• people with the presence of chronic pathologies of the musculoskeletal system;
• patients with psychological abnormalities;
• people with chronic ENT diseases.

People living in large cities with a bad ecological situation are more susceptible to feel pressure drops than residents of rural areas.

Symptoms of physical disorders

The pressure of the mercury pillar (the norm for each person is individual) can be elevated or lowered, which causes different symptoms from meteo-dependent people.

Description of the signs depending on the change of pressure indicator:

With the change of pressure in any direction, the aggravation of chronic pathologies occurs.

Hazard for health

The change in atmospheric pressure is dangerous to weather-sensitive people, as well as a sharp change of its change (fast immersion on the depth, rise to the mountains or a sharp increase / down pressure) for ordinary people.

Possible complications from atmospheric pressure oscillations:

• violation of psychological equilibrium in the irreversible side (schizophrenia, depression, psychosis);
• development of stroke due to increased intracranial pressure;
• development of heart attack in people with heart pathologies;
• irreversible violation of mental activity due to lack of oxygen;
• the development of asthma due to the disorder of the oxygen exchange and activity of the Bronchi;
• the formation of blood clots with the subsequent blockage of vessels;
• as a result of the reduction in immunity, infection with a dangerous infection with the development of subsequent complications;
• deterioration of blood vessels with the probability of development of varicose veins or their rupture;
• irreversible changes as vision and hearing. Perhaps to full blindness and deafness.

The fainting is also dangerous, since the result of falling from loss of consciousness can have a fatal outcome.

How to protect yourself from pressure drops with meteo-dependent people?

The pressure of the mercury pillar (the normal indicator can be changed sharply on the increased or lowered during the day several times) is not amenable to adjustment, so people dependent on meteo conditions, it is recommended to adhere to the following rules:

• complete an inspection from a specialist. Inspection by the doctor will allow to identify additional causes of the body's sensitivity to atmospheric pressure drops (hidden chronic pathologies, hormonal imbalance or general imminent imminent);
• pass treatment. Timely to stop the aggravation of chronic diseases under the supervision of a specialist;
• tracking meteoprognosis or acquiring a home barometer. This method will allow pre-prepared for approaching atmospheric pressure drops and take preventive measures;
• provide a full night rest. Night sleep duration should be at least 8 hours. It is also recommended to get up no later than 7 am and go to 10 hours. Full sleep will allow the body to fully recover and easier to transfer a decrease / increase in pressure;
• observe the full power mode. Food should be diverse and contain enough vitamins and minerals. Full nutrition will allow to strengthen the immunity and respond less to the fluctuations in atmospheric pressure. Also from the menu should exclude heavy and harmful food, do not overeat before bedtime and prevent large interruptions between meals. This will avoid the development of pathologies in the gastrointestinal bodies or the exacerbation of chronic diseases that contribute to the decrease in immunity;
• perform daily walks Fresh air (in any weather). Fresh air normalizes metabolic processes in the body, increases the amount of oxygen in the blood and helps to strengthen the immune system;
• perform daily physical exertion. In the presence of diseases restricting physical activity, the exercise complex is drawn up in the Cabinet of the LFC under the control of the specialist. Classes allow us to normalize the activity of the cardiovascular system, to activate the blood circulation and functioning of the joints. As a result, symptoms from the oscillation of atmospheric pressure will be less pronounced;
• adjust the routine of the day. If it is possible, then for the period of action of the cyclone or anticyclone, to postpone physical and mental work and spend more time to rest;
• in the morning, take a contrast shower. The procedure allows us to normalize the state of the vessels, activates metabolic processes and strengthens the immune system;
• use vitamin complexes and immunomodulators. These drugs allow you to additionally activate the protection of the body. Funds are especially recommended by busy people who do not have the ability to make daily walks, exercise and other methods to strengthen immunity;
• to refuse from bad habits. Nicotine and alcohol have a negative condition on the vessels, the gastrointestinal organs and exacerbate the deterioration of the state during the period of atmospheric pressure drops;
• receive medicines. In the presence of chronic diseases, prepare the necessary medicines (ointment from pain in the joints, tablets from headaches or means to reduce / increase pressure). The type of drugs depends on the type of disease, and are prescribed by a doctor;
• take sedatives. During pressure fluctuations, sedative medicines are required and drinking sedatives from herbs. They participate in normalization of pressure, eliminate nervous overvoltage and contribute to the relief of symptoms from the pressure drop.

Additionally (after consulting with the doctor), you can predetermine the following medicines prescribed by increasing / decreasing atmospheric pressure.

A normal pressure indicator is 760 mm Hg. Art. But depending on the climatic zone, the value changes in a large or smaller side. The person adapts to the indicator that prevails in the region of living. It is important, a sharp increase or lowering the rates of a mercury pillar is the main cause of sudden surpass of blood pressure.

Video about atmospheric pressure and its influence on man

How the weather affects man:

Fragment of the transfer "Live Great" about pressure and weather:

In ancient times, a man noticed that the air puts pressure on ground items, especially during storms and hurricanes. He enjoyed this pressure, forcing the wind to move sailing ships, rotate the wings of windmills. However, it was not long to prove that the air is weight. Only in the XVII century, experience was raised, proven air weight. The reason for this was the random circumstance.

In Italy, in 1640, the Duke Tuscan conceived to arrange a fountain on the terrace of his palace. Water for this fountain should have been punctured from the neighboring lake, but the water did not go above 32 feet. The duke appealed for clarification to Galileo, then an already deep old man. The great scientist was confused and did not find it right away how to explain this phenomenon. And only the Galilee's student, Torricelli, after long experiments, proved that the air is weight, and the pressure of the atmosphere is balanced by a 32-foot water post. He went in his studies even further and in 1643 invented the device for measuring atmospheric pressure - barometer.

So, on 1 cm² of the earth's surface of the air puts pressure equal to 1,033 kg. Such pressure on 1 cm² is experiencing all items on earth, as well as the human body. If you take the surface area of \u200b\u200bthe human body, on average, about 15,000 cm², it is obvious that it is under pressure of about 15 500 kg.

Why doesn't a person feel any inconvenience and does not feel this severity? And this is because the pressure is distributed evenly over the entire surface of the body and the external pressure is equalized by the internal pressure of the air, filling all our organs. The human body (and not only he, and many more fauna representatives) adapted to atmospheric pressure, with it all organs developed, and only with it they can function normally. With a systematic and long training, a person can adapt and live under reduced pressure.

Atmospheric pressure can be measured in millimeters of a mercury pillar (MM. RT. Art.), As well as in millibar (MB), but at present, Pascal and hectopascal (GPa) are accepted per unit of atmospheric pressure in the SI system. Hectopascal is numerically equal to millibar (MB). Atmospheric pressure is 760 mm. RT. Art. \u003d 1 013.25 GPa \u003d 1 013.25 mbar. It is customary to be normal.

But this does not mean that such an atmospheric pressure is a climate norm for all regions and throughout the year.

Vladivostok residents were lucky: the average atmospheric pressure per year is about 761 mm. RT. Art.Although the inhabitants of the mountain village of Tok Galyung in Tibet at an altitude of 4,919 m also do not suffer, and atmospheric pressure there at 0 ° C is only 413 mm. RT. Art.

Every morning, in the weather reports, data on atmospheric pressure on Vladivostok and at the request of radio listeners are not in the GPA, but in mm. RT. Art. at sea level.

Why is the atmospheric pressure measured on land, most often lead to sea level?

The fact is that atmospheric pressure decreases with a height and rather substantially. So, at an altitude of 5,000 meters, it is about two times lower. Therefore, to obtain a view of the real spatial distribution of atmospheric pressure and for comparability of its value in various locations and at different heights, for the preparation of synoptic maps, etc., the pressure leads to a single level, i.e. To sea level.

Measured on a meteorological station located at an altitude of 187 m above sea level, atmospheric pressure, on average by 16-18 mm. RT. Art. lower than below on the seafront.

Figure shows the annual course of the middle monthly atmospheric pressure on Vladivostoku. Such a move of atmospheric pressure (with a winter maximum and summer minimum) is typical for continental districts, and the magnitude of the annual amplitude (about 12 mm. RT. Art.) Can be attributed to the transition type: from the mainland to the oceanic.

For comparison, the magnitude of the amplitude in and is 15-19 mm. RT. Art., and in and only 3.75 mm. RT. Art.

On the well-being of a person, long enough of living in a particular area, the usual (characteristic) pressure should not cause a special deterioration of well-being, and the failure occurs most often with sharp non-periodic oscillations of atmospheric pressure, and, as a rule, ≥2-3 mm. RT. Art. / 3 hours. In these cases, even practically healthy people have a performance, felt gravity in the body, headache appears.

We are not able to influence the weather, but help your body survive this difficult period is completely simple.

How to survive fluctuations in atmospheric pressure during the day?

In the forecast of a significant deterioration of weather conditions, that is, sharp drops of atmospheric pressure, first of all, should not be panicing, calmed down, to minimize the physical exertion. For those who have adaptive reactions proceed quite difficult, it is necessary to consult with the doctor about the appointment of the appropriate drugs.

Especially for Primigode Lead Climatologist Primgidromet E. A. Messelson

Atmospheric pressure is one of the most important climatic characteristics affecting both human. It contributes to the formation of cyclones and anticyclones, provokes the development of cardiovascular diseases in humans. Evidence that air has weight, was obtained in the 17th century, since then the process of studying its oscillations is one of the central for weather forecasters.

What is atmosphere

The word "atmosphere" has a Greek origin, it is literally translated as "couples" and "ball". This is a gas shell around the planet, which rotates with it and forms a single whole cosmic body. It extends from the earth's crust, penetrating into the hydrosphere, and ends with an exosphere, gradually flowing into the interplanetary space.

The atmosphere of the planet is the most important element, providing the possibility of life on Earth. It contains the necessary oxygen, the weather indicators depend on it. The boundaries of the atmosphere are very conditional. It is believed that they start at a distance of about 1000 kilometers from the surface of the Earth and then at a distance of another 300 kilometers smoothly go into the interplanetary space. According to theories that NASA adheres to, this gas shell ends at an altitude of about 100 kilometers.

It arose as a result of eruption of volcanoes and evaporation of substances in cosmic bodies that have fallen on the planet. Today it consists of nitrogen, oxygen, argon and other gases.

The history of the opening of atmospheric pressure

Up to the 17th century, humanity did not think about whether air had a lot. There were no ideas about what atmospheric pressure. However, when Duke Tuscan decided to equip the famous Florentine Gardens of fountains, his project fell with a crash. The height of the water column did not exceed 10 meters, which contradicted all ideas about the patterns of nature at the time. It is here that the history of the opening of atmospheric pressure is taken.

The study of this phenomenon was engaged in a student of Galileo, an Italian physicist and the mathematics of Evangelist Torrichelli. With the help of experiments on a more severe element, mercury, a few years later, he managed to prove weight weight by air. He first created a vacuum in the laboratory and developed the first barometer. Torricelli represented a glass tube filled with mercury, in which under the influence of pressure there was such a number of substance that would equalize the pressure of the atmosphere. For mercury, the pillar's height was 760 mm. For water - 10.3 meters, this is exactly the height that fountains in the Gardens of Florence rose. It was he who discovered for humanity, what is atmospheric pressure and how it affects human life. In the tube it was called in his honor "Torricelli Empty".

Why and as a result of which atmospheric pressure is created

One of the key tools of meteorology is the study of movement and movement of air masses. Due to this, you can get an idea of \u200b\u200bwhether atmospheric pressure is created. After it has been proven that the air has weight, it became clear that on it, like on any other body on the planet, the force of attraction acts. This is precisely the occurrence of pressure when the atmosphere is under the influence of gravity. Atmospheric pressure may vary due to air differences in different areas.

Where the air becomes more, it is higher. In the rarefied space there is a decrease in atmospheric pressure. The reason for the change lies at its temperature. It is heated not from the rays of the sun, but from the surface of the earth. Heating, the air becomes easier and rises up, while cooled air masses are lowered down, creating a constant, continuous motion. Each of these threads has a different atmospheric pressure, which provokes winds on the surface of our planet.

Influence on the weather

Atmospheric pressure is one of the key terms in meteorology. Weather on Earth is formed due to the effects of cyclones and anticyclones, which are formed under the influence of pressure drops in the gas shell of the planet. The anticyclones are characterized by high indicators (up to 800 mm mercury and higher) and low speed, while cyclones are areas with lower indicators and high speed. Tornadoes, hurricanes, tornadoes are also formed due to sharp drops of atmospheric pressure - it falls inside the tornado, reaching a 560 mm mercury pillar.

Air movement leads to changing weather conditions. The winds arising between areas with different levels of pressure are distilled by cyclones and anticyclones, as a result of which atmospheric pressure is created that form certain weather conditions. These movements are rarely systematic, and they are very difficult to predict. In zones where elevated and low atmospheric pressure face, climatic conditions change.

Standard indicators

The average indicator in ideal conditions is considered to be the level of 760 mm mercury pillar. The pressure level varies with a height: on the lowlands or territories below the level of the sea, the pressure will be higher, at an altitude, where the air is rare, on the contrary, its indicators are reduced by 1 mm mercury pillars with each kilometer.

Low atmospheric pressure

It decreases with increasing height due to removal from the surface of the Earth. In the first case, this process is due to a decrease in the impact of gravitational forces.

Heated from the ground, the gases, of which the air are expanding, their mass becomes easier, and they rise into higher movement occurs until the neighboring air masses are less dense, then the air applies to parties, and the pressure is aligned.

Traditional territories with lower atmospheric pressure are treated tropics. In the equatorial territories there is always reduced pressure. However, zones with an increased and reduced indicator are unevenly spread over the ground: plots with different levels may be present in one geographic latitude.

Increased atmospheric pressure

The highest level on Earth is observed in the South and North Poles. This is explained by the fact that the air above the cold surface becomes cold and dense, its mass increases, therefore, it attracts it stronger to the surface of gravity. It is lowered, and the space above it is filled with warmer air masses, as a result of which atmospheric pressure with an elevated level is created.

Influence on man

Normal indicators characteristic of a person's accommodation should not have any impact on his well-being. At the same time, atmospheric pressure and life on earth are inextricably linked. Its change - an increase or decrease - can provoke the development of cardiovascular diseases in people with increased arterial pressure. A person may experience pain in the heart of the heart, attacks of anonymous headaches, reduced performance.

For people suffering from diseases of the respiratory tract, anticyclones bringing increased pressure can be dangerous. Air lowers and becomes more dense, the concentration of harmful substances increases.

During the vibrations of atmospheric pressure, people decrease immunity, the level of leukocytes in the blood, so it is not recommended to load the body physically or intellectually on such days.

About the atmospheric pressure is mentioned even in weather forecasts, but what is his nature? What depends on low and high atmospheric pressure? How does his change affect the health of a person?

What it is?

Back in 1638, people were poorly represented that such a phenomenon, in general, exists while Duke Tuscan decided to decorate Florence fountains at high altitude. His attempt to crash, as the water was not raised above ten meters above ten meters. Then the time of the first experiments came in this area.

With the development of science, it became clear that the pressure is a physical value that reports the amount of force perpendicular to the area of \u200b\u200bthe area of \u200b\u200bany surface. The atmosphere is no exception. It presses on our planet with the help of air that is present everywhere.

The mass of the air around us in millions of times is less than the earth, but this is enough enough that all objects and creatures have experienced its influence. About fifteen tons of air give us daily on us, but we cannot feel it, because the internal pressure of the human body is the same as atmospheric.

Low and high atmospheric pressure

Like any physical size, pressure can be measured. In the international system of units, Pascal (PA) is used for this, in Russia also apply bars and millimeters of mercury pillar.

As an average, an indicator is taken at a temperature of zero degrees at sea level on a latitude of 45 degrees. It is indicated as a normal atmospheric pressure and is 760 millimeters of mercury pillar or 101325 Pascals.

What does the atmospheric pressure depend on? First of all, the amount of air per unit area: what is less, the lower the pressure and on the contrary. It depends on the height directly. At large altitudes, the air is more discharged, therefore its indicator decreases with the raising. At an altitude of 5 km, its strength is least twice, at an altitude of 20 km - about 18 times.

The pressure is prone to change at different times of the day and seasons. An important factor is the temperature. At night, when the temperature drops, the pressure is slightly lower than the day. On continents, high atmospheric pressure is marked in winter, low - in summer.

Pressure zonality

The globe areas are heated unequal, as a result, the pressure distribution is zonally. In some places the air heats up and reduces its pressure. Rising up and gradually cooling, it moves to adjacent areas, increasing the pressure there.

Such a redistribution of the air masses is well noticeable in the equatorial belt, where, due to high temperatures, the pressure is always reduced, and in neighboring tropical belts it is usually elevated. In Antarctica and the Northern Pole, constant high pressure is a consequence of air inflows from moderate latitudes.

As mentioned above, seasonal fluctuations are characteristic of pressure, but these changes are not too significant. In general, pressure indicators are stable: there are constantly zones of increased and reduced pressure on the planet.

Effect of High Atmospheric Pressure

Feel the strength of this phenomenon on himself a person can rising into the mountains. Many familiar to laying the ears when overcome sometimes minor lifts. You can feel it, diving deep under water, by the way, the maximum depth of such a dive without special equipment is no more than 170 meters (although it is rather risky).

In everyday life, man also feels pressure changes, especially if there are sharp differences. Highly atmospheric pressure is accompanied by clear weather and dryness, harmful substances in the air are felt sharp. As a result, allergies and problems with respiratory organs are exacerbated.

Increased pressure is brightly reflected on the well-being hypertensive. Contributing to a decrease in blood leukocytes, it can weaken immunity. Therefore, during periods of increased pressure, a person is more difficult to deal with infections and other diseases.