[QasimK]

I’m not sure I fully understood from the article, but it seems like they were using genetics as a proxy for “natural” wake-up time and something something causation for depression.

I didn’t really get it despite reading the explanation three times. I’m not convinced but that could just be down to this article rather than the paper itself.

I just don’t get how they accounted for something like “depression causes people to sleep later and for longer”.