You should stop so you don't do serious damage.
Answer:
Pharmacodynamics
Explanation:
Pharmacodynamics is the branch of pharmacology concerned with the effects of drugs and the mechanism of their action. So the closest answer to this question is Pharmacodynamics
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Bad eating habits, less self-confidence
Smoking can affect the lungs and give you lung cancer. When someone smokes, they would inhale the smoke, causing the smoke from the cigarettes to go into your lungs.
