Choosing one of a large number of methods to give up smoking, a man should understand why the tobacco smoking leads to the nicotine addiction and how he can get rid of it.
During the tobacco smoking, the nicotine enters into the blood through the lungs and spreads throughout the body, penetrating into the human body. Influencing on the nervous cells of the brain (receptors), the nicotine forces them to release neurotransmitters: dopamine and norepinephrine.
Dopamine
Neurotransmitters dopamine is responsible for the formation of feelings: pleasure and enjoyment, making the person to repeat the actions that bring pleasant feelings. A large amount of dopamine is released during sex, a little less during the consumption of delicious food, but the largest amount of dopamine is released when using drugs.
Norepinephrine
Neurotransmitter dopamine directly takes part in the biosynthesis of norepinephrine (a precursor of norepinephrine), so an increasing of the concentration of dopamine and norepinephrine simultaneously occurs in the brain.
Neurotransmitter norepinephrine has an stimulating effect on the brain cells, determining the degree of waking man. Increase in the amount of norepinephrine in the brain leads to the increase of concentration, heart rate and the productivity of mental activity.
Sharp decrease in the amount of norepinephrine leads to the significant decline of mental activity, since norepinephrine is a precursor of adrenaline, participating in almost all kinds of metabolism in the body.
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