So the article states that Carl Hart makes a claim that 70% of drug users don't meet the criteria for being a drug addict. I'm wondering how you could even get a reliable number for this for a drug like heroin, given the stigma attached to this drug and the fact that users themselves may be in denial that they are dependent on the drug. Someone can be meeting all their obligations in life and still be struggling with a drug addiction. If asked, I would imagine a lot of high functioning addicts would say they can stop whenever they want to, they just don't want to. Anyway, I may just have to give his book a read, it sounds interesting.

Yea, I would be very interested in the methodology they used to come up with that 70% and I am wondering if that is a snapshot in time or is that over someone's entire life. Addiction almost always starts out in a more controlled manner until its not. So if 50% of those 70% of drug users become full blown addicts, then its a BS number. I'm also really curious how they found those high functioning drug users, because I can't imagine anyone that is successfully hiding their use from the world would divulge it to anyone they don't know or trust ("hey, are you a high functioning drug user?" sounds like something a cop might say).

Both the "snapshot" studies and the lifetime studies find similar rates of addiction, I went and found part of what he's referencing.

https://jamanetwork.com/journals/jamapsychiatry/fullarticle/...

An easy way to improve that accuracy is to survey people based on their past use as well. There's less reason to be in denial about something you've already dealt with.