Figure 3 is suspicious. Even the placebo arm has much better scores for depression and anxiety from baseline?
You can even collect depressed people, do nothing at all, and when you survey them 6 months later the average scores will improve. This is because depression is, on average, an aberrant condition and the average patient will tend to revert toward the mean.
However, psychedelic studies have a bigger problem: Psychedelics trigger false feelings of amazement and wonder, feeling like something magical has happened. This is like turbo placebo when you tell people that it’s a depression treatment. Maybe that’s a valuable therapeutic effect, or maybe not. There’s a lot to explore, but from all the studies I’ve read I’m not as bullish on mushrooms for depression as the headlines would indicate.
The key indicator of efficacy is the difference between groups. In this case there is some difference between groups but it is small.
Depression is a symptom, and for symptoms there are many causes.
Personalized medicine will fix this but that costs money and time and caring.
While the first 5 week post treatment actually looks impressive, I don't think the treatment arms being essentially the same after 6 months supports the conclusions of the study. Unless we backpedal and say the inactive grouo was microdosing (which has its own baggage...)