Elucidating def Chat i omobuwa omobuwa
That's why exposure to tobacco smoke is dangerous even for a nonsmoker.No one starts smoking to become addicted to nicotine.Smoking is the inhalation of the smoke of burning tobacco encased in cigarettes, pipes, and cigars.Casual smoking is the act of smoking only occasionally, usually in a social situation or to relieve stress.Although specific genes have not yet been identified as of 2003, researchers think that genetic factors contribute substantially to developing a smoking habit.Several twin studies have led to estimates of 46-84% heritability for smoking.
Also, it may damage the inner walls of the arteries, which allows fat to build up in them.
Epinephrine causes several physiological changes—it temporarily narrows the arteries, raises the blood pressure, raises the levels of fat in the blood, and increases the heart rate and flow of blood from the heart.
Some researchers think epinephrine contributes to smokers' increased risk of high blood pressure.
Besides tar, nicotine, and carbon monoxide, tobacco smoke contains 4,000 different chemicals.
More than 200 of these chemicals are known be toxic.