Though some parents may emphasize the long-term impact of smoking on their teen's health — as they should — teenagers and young adults may be more persuaded by the immediate and early negative effects. These include:​
(A) Reduced physical fitness. Smoking reduces lung function and lung growth. It also causes shortness of breath, coughing, wheezing and increased phlegm​.
(B) Early heart disease. Smoking can damage the heart and blood vessels which can increase the risk for atherosclerosis and heart disease​
(C) All of the above
(D) Poor oral health. Smokers may suffer from yellow teeth, bad breath and other mouth problems