Is a doze at daytime a diabetes risk?

Is a doze at daytime a diabetes risk?

Have you heard that a doze in the daytime can give you diabetes?

I don’t think it’s quite that –

I read about it in the paper – they’ve found out about it in Japan 

I think that the paper may have got hold of the wrong end of the stick.


But they said that if you doze for more than an hour a day you’re likely to get type 2 diabetes. 

What the Japanese researchers actually said is that there is a link between them.

Isn’t that the same thing?

Well not really.  There is a link between daytime dozing of more than an hour and type 2 diabetes –

See I told you

– but that doesn’t mean that the dozing is causing the diabetes.  It’s more likely that the diabetes is causing the dozing.

How’s that then?

They didn’t try and exclude obesity from the study, and see what happened then.  We know the link between type 2 diabetes and obesity, and the link between obesity and sleep apnoea.

What’s sleep apnoea?

Sleep apnoea is where the upper airway is compressed by extra weight carried around the neck, obstructing the flow of oxygen.  This results in heavy snoring and gasping for breath throughout the night.  This causes poor quality sleep, and tiredness during the day.

So it’s the tiredness that makes people doze?

That’s right.  There is a link, but it’s the effect of the type 2 diabetes causing people to doze, not the other way round.

So I can nap without affecting my health?

In that sense yes.  If you want to make sure that you get the most out of a power nap then make sure it’s short enough to stop you falling into a deep sleep.  That will only leave you feeling groggy for a while afterwards.

Thanks for that – I think I’ll get my head down for ten minutes after all

Very good.


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