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Study: 22 million Americans use illegal drugs
Marijuana is the most common drug for first-time users, according to the study.
September 8th, 2011
06:10 PM ET

Study: 22 million Americans use illegal drugs

More than 22 million Americans age 12 and older - nearly 9% of the U.S. population - use illegal drugs, according to the government’s 2010 National Survey on Drug Use and Health.

The overall rate of drug use is only slightly higher than the 2009 study but nearly a percentage point above the 2008 survey.

“I am encouraged there were no significant increases in drug use over the past year,” Gil Kerlikowske, the U.S. director of national drug control policy, said in a statement. “However, today’s survey also shows that drug use in America remains at unacceptable levels.”

Marijuana, cocaine, heroin, hallucinogens, inhalants and some prescription drugs used for non-medical purposes were counted in the survey. Marijuana was the most commonly used drug, with more than 17 million users in 2010, 3 million more than in the 2007 survey.

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Filed under: Addiction • Alcohol • Marijuana

September 8th, 2011
12:48 PM ET

'Lucy' discoverer: Why I study human evolution

Donald C. Johanson is the director of the Institute of Human Origins at Arizona State University.   He discovered the 3.18 million year old skeleton popularly known as "Lucy."

My deep commitment to understand the origins of humankind was ignited when I read Thomas Henry Huxley’s 1863 book "Man’s Place in Nature." The core idea that gripped my teenage mind was the suggestion that humans and African apes shared a common ancestor that roamed Africa millions of years ago.

I was riveted by the 1959 discovery of a 1.8 million-year-old skull at Olduvai Gorge and I knew that I wanted to travel to Africa and join the search for our ancestors. The allure of conducting fieldwork in remote unexplored regions of Africa dominated my thoughts throughout my undergraduate and graduate studies.

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Filed under: Cancer

Take away online porn and what do you get?
September 8th, 2011
10:02 AM ET

Take away online porn and what do you get?

Ian Kerner, a sexuality counselor and New York Times best-selling author, blogs about sex on Thursdays on The Chart. Read more from him on his website, GoodInBed.

Over the past month, I’ve been conducting a “no-porn” experiment with a group of guys. Not that I’m anti-porn; I’d like to think that I take a nuanced perspective.

As a sexuality counselor and author, I’ve written quite a bit in this column about Internet porn - from how it’s altering the contours of our sex lives in unexpected ways to how women are starting to use porn much in the same ways as men.

But unlike the subjects of some articles about porn that have also recently appeared on CNN.com - Can the Christian crusade against pornography bear fruit? and Is pornography driving men crazy - I emphatically do not buy into the alarmist rhetoric that contends that porn is addictive, porn is a gateway drug, and porn destroys marriages.
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Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.

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