Despite all precautions and preventive measures, every year smoking kills millions of people across the world, and these numbers are constantly growing.Many people probably have wondered why the first non-smokers and then smokers conscious of the harm of nicotine and gradually feeling it worsens the condition of their health, continue to stubbornly bring fire to a cigarette, inhaling the pungent purple smoke.
It is about the impact of active substances of tobacco smoke described in this article.
What happens when a person lights a
main substance of tobacco that causes addiction is nicotine.Immediately after zakurivaniya cigarettes this drug (and is not it called something that is addictive?) Quickly through the lungs into the blood and within 8 seconds, begins to act on the brain.He initially accelerates and then slows down the activity of the nervous system.
Most smokers do not like the first experience with a cigarette, many as a result there were only negative emotions, there are even cas
Moreover, in both cases it will be a conditioned reflex reaction due largely influence of nicotine on nerve cells.
How is nicotine dependence
Now, when a person feels the tension, fatigue or excitement, the brain sends a known signal, "need to smoke", which is easily perceived by consciousness, and hands reach for a pack.
The paradox lies in the fact that almost everyone caught in the trap of depending on a person wants to quit, but very little delay intake of nicotine is included adjustment of consciousness at the level of emotions: smokers describe a state of fear and depression that occur for no apparent reason andfrom this it is particularly depressing.The easiest way to get rid of these negative emotions - smoke.
The result is a vicious circle, and gradually added to the irrational fear fear never quit, shame for his own lack of will, the feeling of hopelessness.
Many experts believe that it is a physiological dependence on nicotine just a little, because it is a substance enters the body quickly and easily deduced from it.But emotional dependency on this "light" drugs, no less than from heavier.
that at this time there is in the body
- Nicotine affects the cardiovascular system.According to some reports, in the heart of the day smoker decreases by 15-20 thousand times more than a non-smoker, with 1,500 liters pumped more blood.This means that the heart and blood vessels wear out more.
- poisons from cigarettes distributed by the blood, the body's natural defenses include: capillaries and blood vessels constrict to reduce the absorption of harmful substances, but it is broken, and the power of organs and tissues.After a few months, the smallest capillaries of hands and feet completely atrophied.Furthermore
- nicotine in the tobacco smoke include resins which are deposited on lung alveoli by reducing the effective area for gas exchange.How does it affect the state of the respiratory system, see the article How to look lighter.
- Carbon monoxide voluntarily inhaled by the smoker, has a very insidious feature: it combines with hemoglobin in the blood several times faster than oxygen.As a result, the body is exposed to a hypoxia - lack of oxygen.It is known that carbon monoxide in the organism of the smoker is 15 times more than in non-smokers.
Thus, smoking is really a negative effect on health, shortening human life and compromising its quality.And what positive changes occur in the body after giving up cigarettes, read our article What happens when you throw smoke.
If a person does not smoke himself, but inhales tobacco smoke released by someone else, it is also exposed to harmful substances.Such "tobacco victims" are called passive smokers.Their body also accumulate nicotine and tar, although on a smaller scale.
It is found that the spouses of smokers more likely to have lung disease and cardiovascular system, and the children of smoking parents can get hearing loss.Pregnant woman house, bringing the cigarette to his mouth, must understand that the fetus is exposed to nicotine, and the baby is often born prematurely, weak and often sick.And this is not a complete list of the negative effects of tobacco smoke.