This is your brain on heroin

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Sanjay Gupta explains what happens to your brain on opiates, the key ingredient in heroin and other powerful narcotics.http://feeds.feedburner.com/~ff/rss/cnn_us?d=yIl2AUoC8zA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=YMoI7k4TAiE:Vm15jTMKuP8:yIl2AUoC8zA) http://feeds.feedburner.com/~ff/rss/cnn_us?d=7Q72WNTAKBA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=YMoI7k4TAiE:Vm15jTMKuP8:7Q72WNTAKBA) http://feeds.feedburner.com/~ff/rss/cnn_us?i=YMoI7k4TAiE:Vm15jTMKuP8:V_sGLiPBpWU</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=YMoI7k4TAiE:Vm15jTMKuP8:V_sGLiPBpWU) http://feeds.feedburner.com/~ff/rss/cnn_us?d=qj6IDK7rITs</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=YMoI7k4TAiE:Vm15jTMKuP8:qj6IDK7rITs) http://feeds.feedburner.com/~ff/rss/cnn_us?i=YMoI7k4TAiE:Vm15jTMKuP8:gIN9vFwOqvQ</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=YMoI7k4TAiE:Vm15jTMKuP8:gIN9vFwOqvQ)
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