Researchers Doubt That Certain Mental Disorders Are Disorders at All
forbes.com
forbes.com
That some abnormal psychological conditions can be reasonable reactions to stimuli isn't that relevant IMO. A broken leg is a normal reaction to hitting a tree when skiing, but we still need medical care when it happens.
If scientists then wants to discuss whether it should be called unable-to-walk disorder or a broken leg, I guess let them, but that discussion is just about terminology and unless I see concrete proof that it's more important than the treatment I don't think it's clinically relevant.
"Evidence" cited is based on gathering a crowd of people suffering from at least a half-dozen medically-indistinguishable disorders, and giving them all just one medication that helps only the small fraction of them who suffer only what it treats, and then announcing that medication doesn't work.
It is like rounding up people with broken limbs of all kinds--many with more than one break--and putting a cast on each one's left shinbone; then announcing casts don't work, because look at all the ones it didn't help.
The "Gold Standard" double-blind trial works only if you can diagnose accurately. But the only tool known to diagnose depression is to try and see which medication helps. Design a plausible "gold standard" trial for that, I dare you.
The people conducting these depression treatment trials are guilty of malpractice and gross incompetence, and people repeating their results are, at best, dupes.
Modern life is not much like what we evolved in, but that many people do fine in it shows that environment is not determinative.