I am obliged to point out that Johann Hari has a distinctly chequered reputation. He lost his job as a columnist at The Independent in 2011 due to multiple substantiated allegations of plagiarism; it later transpired that he had vandalised the Wikipedia articles of journalists who had criticised his conduct.
His book Lost Connections has been strongly criticised for misrepresenting the mainstream scientific position, cherry-picking data and making unreferenced and unsupported claims.
Thanks for your post, I was not aware of the controversy around Hari.
That said, I found his book "Chasing the Scream: the first and last days of the war on drugs" [1] an informative resource that in some places touches on this thread's topic.
That said, I found his book "Chasing the Scream: the first and last days of the war on drugs" [1] an informative resource that in some places touches on this thread's topic.
[1] https://en.wikipedia.org/wiki/Chasing_the_Scream