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Although nicotine is addictive, most of the severe health effects of tobacco use comes from other chemicals.
Tobacco smoking can lead to lung cancer, chronic bronchitis, and emphysema.
Children exposed to secondhand smoke are at an increased risk of ear infections, severe asthma, lung infections, and death from sudden infant death syndrome.
For many who use tobacco, long-term brain changes brought on by continued nicotine exposure result in addiction. Department of Health and Human Services has established a national toll-free quitline, 1-800-QUIT-NOW, to serve as an access point for anyone seeking information and help in quitting smoking.
Chewed tobacco products include chewing tobacco, snuff, dip, and snus; snuff can also be sniffed.
The nicotine in any tobacco product readily absorbs into the blood when a person uses it.
NRTs deliver a controlled dose of nicotine to relieve withdrawal symptoms while the person tries to quit.Upon entering the blood, nicotine immediately stimulates the adrenal glands to release the hormone epinephrine (adrenaline).Epinephrine stimulates the central nervous system and increases blood pressure, breathing, and heart rate.All of these risks apply to use of any smoked product, including hookah tobacco.Smokeless tobacco increases the risk of cancer, especially mouth cancers.