Can too much sleep have negative effects on the body?

There's such a thing as too much sleep, but it's usually a sign of something else.

Asked by: Chris Toyne, Amersham

Studies have shown that people sleeping more than nine hours a night, are at greater risk of diabetes and obesity. But it is important to realise that the oversleeping is probably just a symptom of something else – depression being the most frequently cited. If you’re otherwise fit and healthy, it’s hard to make yourself sleep longer than you need.

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