Trying to separate three different claims about collagen peptides: that it is the right molecule, that it is the right dose, and that it does something useful.
Sample size, blinding, and who paid for it. Those three questions kill most of the confidence in most of these threads.
Anyone got a paper worth reading on this rather than a write-up of a paper?
Baseline first.
A plausible mechanism is not an outcome, and this class is the textbook example.
Same here.
How long before you can reasonably say something is or is not doing anything? Currently on collagen peptides myself.
What is the first thing you would read if you were starting from zero?
Same here.
Stupid question: how do you know whether what is in the vial matches the label at all?
How long before you can reasonably say something is or is not doing anything? How long have you been on collagen peptides?
Loose evidence and no evidence are different, and people overcorrect in both directions.
An inconclusive account is useful if it stops the next person mistaking a story for a controlled comparison. How long have you been on collagen peptides?