You do not seem to be talking of the same thing. He wrote: > It may be indicative of a health issue Now you write: > No study I've seen seems to suggest ther

You do not seem to be talking of the same thing. He wrote: > It may be indicative of a health issue Now you write: > No study I've seen seems to suggest there's any problem with sleeping more up to something like 12 hrs/night I think So he said it may be an indication of an issue, and you write that it may not be unhealthy to sleep a lot. Those are two different things. As for your claim: A quick search returns many hits related to issues caused by sleeping more than ~9 hours. I have not reviewed them (I spent 1 minute on this) so can't say if the studies well performed. Example: https://www.ncbi.nlm.nih.gov/pubmed/19473367 https://www.ncbi.nlm.nih.gov/pubmed/19473367 "Prolonged sleep duration (night-time sleep and daytime napping) may be associated with an increased risk of dementia." But saying that no study would even suggest there would be a problem seems strange considering I found a bunch of them in a minute. Maybe you have done a deeper review of the studies and concluded that they are invalid, or?