I'd be curious to know how many mg's an average sized magic mushroom contains. I've taken a stem and had an enjoyable couple hours. I've taken several mushrooms 3.5-7g and had a rather intense set of experiences that I'll never forget, along with some very dark and scary moments -- And I can see how these moments would permanently change someone (even a 'healthy' person).

Ultimately, how many mg's of psilocybin does an average magic mushroom contain? The very first line of text in a google search said 10mg psilocybin per 1g of mushroom. 35-70mg psilocybin for the two standard street dosages - so on the street, your minimum suggested dosage is, at minimum, like 40% stronger than this study looked into? Could make for some less than favorable experiences for people hearing about this 2nd hand and not looking into it.

I wonder if the researchers in this study had people consume mushrooms on an empty or full stomach, as well. Also makes a big difference in terms of intensity and duration (in my experience).

And like you mentioned, those in the study also had 1-on-1 support from a trained professional.. On the street, you've got your goofball friends and maybe one wise, old trip-sitter if you're lucky. And honestly, I'd prefer a seasoned trip-sitter whose taken the drug many times over a trained professional who has is much less likely to have that kind of firsthand experience. The company you keep can have just as much of an impact as the potency of the hallucinogen (again, in my experience).