Drugs are prepared to shoot intravenously by a user addicted to heroin, February 6, 2014.
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Everything you need to know about drugs

Updated

Did you know “meth mouth” is fake? Or that meth has the same effect on the brain as Adderall? Oh, you probably think crack cocaine addicts can’t think rationally, but actually they can…and they do! Columbia Professor Dr. Carl Hart sits down with Chris Hayes for an extended interview to debunk the myths we buy into surrounding drug addiction.

All In with Chris Hayes, 3/5/14, 7:25 PM ET

The journey from inner-city Miami to Columbia

Professor Dr. Carl Hart talks to Chris Hayes about how his experience growing up in Miami shaped who he is today.

All In with Chris Hayes, 3/5/14, 7:20 PM ET

The surprising truth about drug addiction

Columbia Scientist Dr. Carl Hart tells us why he thinks everything we thought we knew about drug addiction is wrong.

All In with Chris Hayes, 3/5/14, 7:15 PM ET

What the media gets wrong on drugs

Dr. Carl Hart discusses the how the media misinterprets and overblows drug addiction.

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Everything you need to know about drugs

Updated