Earlier quoted context omitted.
I remember reading an article like that. Also, it's a bit of a meme that if depression was 100% harmful then it would already be eliminated by evolution. I mean why shouldn't people prone to depression die off? Don't make a mistake, I'm still working on improving my life and uncovering the root causes. It is a silent thief of life.
The appendix is 100% harmful but not eliminated. As is nearsightedness. Evolution is only affected by genotypes that prevent reproduction.
https://academic.oup.com/mbe/article/35/12/2957/5112969
"the strongest signals of recent human adaptation in Europe did not coincide with the Neolithic transition but with more recent changes in environment, diet, or efficiency of selection due to increases in effective population size."