(no subject)

[nohanii]

Columbia University did some study that linked "late bedtimes" to depression. They're saying that going to bed late causes depression. This completely ignores the fact that teenagers have a much later melatonin surge than adults and children, so the naturally fall asleep later. They also apparently ignore the fact that depression routinely causes sleep problems -- either not enough or too much sleep. Essentially, they took a link between depression and going to sleep late and leaped to "not enough sleep causes depression." CORRELATION DOES NOT IMPLY CAUSATION, NUMBSKULLS. I thought these people were supposed to be smart? Now, if they'd actually deprived healthy people (or rats) of sufficient sleep and saw the development of depression in these subjects, then I'd believe their results.