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The health benefits of a month without alcohol are unclear, and the British and Canadian medical authorities recommend several drink-free days per week.

Benjamin Plackett, Contributor

A 12-year study of more than 1,000 people at one Boston hospital suggests a new way to alert emergency room doctors of underlying addiction.

Jason Socrates Bardi, Editor

Nicotine in the air and clothing permeates skin and enters the bloodstream at levels equivalent to inhalation of secondhand smoke.

Kimberly Hickok, Contributor

New research may suggest a way to prevent addiction relapse.

Benjamin Plackett, Contributor

New research builds case for a biological link between stimulant use and HIV onset.

Benjamin Plackett, Contributor

Scientists could be getting close to identifying some of the genes that increase the risk of alcohol dependence.

Benjamin Plackett, Contributor

How brain chemistry makes it hard to quit.

Devin Powell, Contributor

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