"he truth is he has such a narrow experience of life, limited by wealth, fame and privilege, that he cannot begin to guess what disastrous effect drugs can have on people in different circumstances.

Speaking objectively, from a distance, he doesn’t look to me like a great advert for marijuana, cocaine or anything else.

He appears neither particularly happy nor stable. Looking at the recent outcomes of his life, he has left his home country, broken off relations with members of his family, seems distanced from his friends back home and no longer has an Army career.

That doesn’t strike me as a ringing endorsement for self-medication with mind-altering substances.

At best, we can say that if drug use has not exacerbated his mental health problems, then he can count himself extremely fortunate."

"........Harry is an example of what medical researchers call ‘N=1’. That’s a fancy way of saying his experiences are wholly anecdotal: The number (or ‘N’) of people involved in his unscientific study is one, ie himself.

It’s the least relevant, most potentially misleading kind of evidence. And it is contradicted by experiences I have as an NHS psychiatrist all the time."

"..........As for his enthusiasm for ayahuasca, a mind-altering drink made from plants found in the Amazon rainforest including the Psychotria viridis shrub, I am almost speechless at the stupidity of his endorsement.

Any qualified psychiatrist who promoted this drug as a panacea for all would probably deserve to be struck off. The Duke of Sussex has forfeited any right he might have had to be seen as a credible representative for mental health charities."

"....Ayahuasca causes paranoia and panic attacks which can do lasting mental damage – quite aside from its unpleasant physical side effects, which include vomiting and diarrhoea. Harry’s twee description of it as a windscreen wiper for the mind is a complete and utter embarrassment.

The kindest interpretation of his comments is that he’s been seduced by the fashionability of the drug, which is popular among the trendy middle classes.

He is promoting yet another quack therapy. His vacuous, self-satisfied waffle only goes to show what a sheltered life he leads.

He imagines he is a spokesman for his generation, and casually remarked that 99.9 per cent of people ‘are carrying round some form of grief, trauma or loss’.

This much is certain: 99.9 per cent of people did not grow up in a palace."

https://www.dailymail.co.uk/columnists/article-11823945/Prince-Harrys-words-cause-huge-harm-says-psychiatrist-DR-MAX-PEMBERTON.html