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Is This The Surprise Reason You're Always Tired?

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20-01-2016 | 05:25

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Is This The Surprise Reason You're Always Tired?

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A recent study carried out by a medical team in Edinburgh found that boosting vitamin D intake can raise energy levels and lower blood pressure.

Volunteers were asked to cycle for 20 minutes. They were then given either a placebo or vitamin D and, two weeks later, were asked to cycle for 20 minutes again.

Those who'd taken the vitamin D were able to 'cycle longer with less effort' and showed reduced levels of the stress hormone cortisol, which can also cause raised blood pressure as it narrows blood vessels.

Vitamin D deficiency is a peculiarly contemporary phenomenon. The most efficient way of absorbing what is an essential vitamin is through sunlight directly on the skin.

But, ironically, in our bid to avoid sun damage - a contributory cause of both skin cancer and premature ageing - many of us just don't get enough.

Though the Scottish study only had 13 participants, its lead author, Dr Emad Al-Dujaili, of Queen Margaret University, is convinced of its importance.

'Vitamin D deficiency is a silent syndrome linked to insulin resistance, diabetes, rheumatoid arthritis, and a higher risk for certain cancers,' he says.

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