PokerVovo - Link Alternatif PokerVovo - THE GENETIC COMPONENT Not all people get equally easy dependent of nicotine. There are factors yet not fully understood that make some people more easily addicted than others. Perhaps some persons have receptors on their nerve cells that more easily get trigged by nicotine than others, or perhaps some people have more receptors with the ability to get trigged by nicotine, and this is inherited in the genetic code.
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THE NERVOUS MECHANISMS WORKING BY ADDICTIONThe normal brain has signal substances with a tranquilizing effect, and substances with a stimulating effect upon nerve cells. Like most narcotic substances, nicotine act like a signal substance by fitting into receptors on some brain cells.
Nicotine attaches itself to some receptors and thus give the nerve cell having these receptors a signal. The cells getting such a signal from nicotine, will react by secreting another signal substance, dopamine that influence still other cells. Dopamine will tranquilize some brain cells and stimulate others, and the total effect of this is the pleasurable effects of smoking.However, when nicotine steadily induces dopamine release, the brain will gradually decrease the production of dopamine when nicotine is not present, and the brain will feel a steadily greater need for nicotine to work normally and feel well.
