All of these diseases are more prevalent among people with bipolar disorder and sleep disturbances are too.

I notice on my fitbit that I have up to 2 hour variations in how much I sleep every night. (Not good according to this study.)

This is even though I take an olanzapine if I sleep less than 7 hours for 2 nights in a row or if I am still awake at 11:30 pm. My tremor though is worse the day after I take it and I know from past experience Zyprexa tips my blood sugar into pre-diabetes and messes with some other metabolic parameters too. Since i only take it infrequently (a few times a month recently sometimes not at all) . even a small dose will knock me out for the night.

Study links irregular sleep patterns to metabolic disorders | National Institutes of Health (NIH)

Does anyone else here have a lot of variation in how much they sleep from one night to the next?