dr. miotto: people tell me, "when i'm looking for crack... if you ask me, 'give me your right leg,' i would say, 'take it. i want crack now.'" so it disrupts families, lives, criminal behavior run rampant. one of the worst things for me... my wife had bought a bunch of new stuff-- new tv, this and that-- and she had a good job, and we had a little kid... and... she had went out. and i sold everything. i took everything she bought for the kids, for her, for me, i sold it all. what really hurt, was that when she came back, the pain that she had, ...you know... i mean it was like a pain where she wasn't crying, she was like, wailing. and i mean i felt bad, but i still was getting high. cocaine has a very predictable set of physiological consequences in terms of its use, but they're very acute. they come on rapidly, and, depending on how you administer it, they'll come on more or less rapidly. they subside fairly rapidly. it has a short duration of action. narrator: this rapid high can pose serious health risks: disturbances in heart rhythm... he