"A new study has found that not sticking to a regular bedtime and wake-up schedule–and getting different amounts of sleep each night–can put a person at higher risk for obesity, high cholesterol, hypertension, high blood sugar and other metabolic disorders."
https://neurosciencenews.com/sleep-disruptions-metabolism-14174/
@freemo Firstly, I would say that the article directly quotes the authors of the paper in that "this provides some evidence supporting a causal link between irregular sleep and metabolic dysfunction." Second, the article clearly states that the converse hypothesis was not found. That is to say, the sleep duration and bedtimes preceded the development of metabolic dysfunction, not the other way around.
@freemo All good. 👍
@theodraxis Ahh valid points then. I rescind my comments. I should have dug deeper. I was unaware they showed Granger Causality.