According to YouGov, a third of UK adults say they feel tired about half of the time.

Some research suggests 5-7% of people who see their GP complain of fatigue, and recent surveys say the average British adult only gets three nights of decent kip a week.

No wonder it feels like everyone, everywhere, is constantly exhausted.

But if we’re all so wiped out, how can we be expected to tell “normal” tiredness from more concerning fatigue?

Here, we asked Dr Suzanne Wylie, GP and medical adviser for IQdoctor , when to worry.

When should I see a doctor about fatigue?

Speaking to HuffPost UK, Dr Wylie explained that fatigue “is a very common complaint in general practice and, in most cases, is related to lifestyle factors such as lack of sleep, stress, or overwork”.

But sometimes, it

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