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Cirrhosis of the liver is reversible with long-term abstinence.

Cocaine and amphetamines both cause what reaction in the body?

On average, DNA synthesis errors occur once in every ten billion nucleotides incorporated. Which of the following contributes most significantly to this high fidelity of DNA replication?

After an individual consumes caffeine, how long does it take for caffeine levels to peak? 

Compared to nonsmokers, the life expectancy of a regular smoker is about five years shorter.

Caffeine has been used in a variety of medications to produce what?

The diuretic effects of caffeine have led to its use in what type of medication?

Amphetamines are synthetic stimulants.

About how many Americans suffer premature deaths related to smoking every year?

Lung cancer is the leading major cancer-related cause of death among women.