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Secondhand smoke exposure can also lead to lung cancer and heart disease.It can cause health problems in both adults and children, such as coughing, phlegm, reduced lung function, pneumonia, and bronchitis.Nicotine poisoning usually occurs in young children who accidentally chew on nicotine gum or patches used to quit smoking or swallow e-cigarette liquid.Symptoms include difficulty breathing, vomiting, fainting, headache, weakness, and increased or decreased heart rate.Chewed tobacco products include chewing tobacco, snuff, dip, and snus; snuff can also be sniffed.
Epinephrine stimulates the central nervous system and increases blood pressure, breathing, and heart rate.
Nicotine is poisonous and, though uncommon, overdose is possible.
An overdose occurs when the person uses too much of a drug and has a toxic reaction that results in serious, harmful symptoms or death.
Smoking while pregnant may also be associated with learning and behavioral problems in exposed children.
People who stand or sit near others who smoke are exposed to secondhand smoke, either coming from the burning end of the tobacco product or exhaled by the person who is smoking.