Adding the clinical framing, because it changes how the question reads. The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either. Those three things can all be true at once, and most arguments here are two people holding different parts of that.
One thing that is still open after PharmHunterJen’s answer:
How long did you give it before you decided it was working?
NurseKim_ATL said:The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.
I am going to disagree with the direction of travel here. The thread has converged on the tidiest answer rather than the best-supported one, and those are not the same thing.
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Browse GL BiochemNurseKim_ATL said:The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.
No disagreement, though the timescale matters more than the mechanism here. Most of what looks like a difference in kind turns out to be a difference in how long somebody waited.
Moderator note: two posts asking for a source have been merged into one. Please search the thread before asking again. Tagging this one for the weekly digest.