A mother learns that her son has been taking stimulants.Which of the following is a substance abuse expert most likely to tell her about stimulants?

Question

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Stimulants accelerate the heart and constrict the arteries, leading to increased heart rate, blood pressure, and alertness. They also increase dopamine and norepinephrine levels in the brain, which can lead to addiction and dependence. They are not the same as alcohol and opiates (A), which are depressants that slow down the central nervous system. Stimulants do not slow down the body's metabolism (B) and can actually increase it. Finally, stimulants are just as addictive as depressants (C), if not more so, depending on the individual and the drug.

A Mother Learns That Her Son Has Been Taking Stimulants