Is it dangerous to have too much sleep?

Is it dangerous to have too much sleep?

Chris Idzikowski (Director of the Edinburgh Sleep Centre) gives expert video advice on: Why do we need sleep?; How much sleep is recomended each night?; Does the amount of sleep differ between men and women? and more...

No, there's no indication that too much sleep per se is a problem. If anything, the more one sleeps the better is one's mental performance and that's the way it seems to go. If on the other hand, you've got uncontrollable sleep and you're sleeping a lot, then the question is "why is that happening?"