Hi Kathryn,
Yes, there is a big resurgence now. There are many more serious scientists researching the effects of "entheogens" for psychological therapy (Post Traumatic Stress Disorder, Death anxiety for terminal patients, etc.). The word "entheogen" means "generating" or "awakening" awareness "of God within." Many, if not most, people have mystical experiences if given these substances in the correct setting. The most famous example was the
Good Friday Experiment where subjects were given either psilocybin or a placebo. After about half an hour, everyone knew who got what!

Many people have permanent positive life-changing experiences with only one dose. Cary Grant was a famous LSD patient back in the days when it was legal (many psychiatrists thought it was a wonder drug). Here is what Grant said about it:
All my life, I've been searching for peace of mind. I'd explored yoga and hypnotism and made several attempts at mysticism. Nothing really seemed to give me what I wanted until this treatment. I have been born again. I have been through a psychiatric experience which has completely changed me. I was horrendous. I had to face things about myself which I never admitted, which I didn't know were there. Now I know that I hurt every woman I ever loved. I was an utter fake, a self-opinionated bore, a know-all who knew very little. I found I was hiding behind all kinds of defenses, hypocrisies and vanities. I had to get rid of them layer by layer. The moment when your conscious meets your subconscious is a hell of a wrench. With me there came a day when I saw the light."
The book you are reading, The Spirit Molecule, is not about LSD but rather DMT. I read that book last year, and then went to San Fransisco for "Bicycle Day" which was a conference/celebration of the 68th anniversary of Albert Hofmann's first intentional dose of LSD after he discovered it. I heard a talk by Richard Strassman, the author of the Spirit Molecule, and many other experts in the filed of Psychedelic Science.
The latest conference I went to was Cartagraphie Psychedelica - a play on the name of MAPS which hosted the conference. MAPS is an acronym for Multidisciplinary Association for Psychedelic Studies. It was an amazing weekend. The people I met were all of the highest caliber. They look you in the eye and are really "there" when you talk with them. Entheogens are a very potent medicine. Not to be "played with" but definitely not to be ignored. They are truly transformative.
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