If you sleep with your curtains open, it could lead to serious health concerns.

       Most people sleep with their curtains closed as it can be difficult to drift off with light coming into your room.

       However, some enjoy the natural light waking them up in the morning.

       But researchers suggest if you’re in the latter camp, you should invest in some blackout curtains if you can.

       Experts have urged people to rethink their sleeping habits as it could be affecting your health.

       Researchers have claimed that leaving curtains open while you sleep at night could “increase your risk of a stroke by 43%” as light pollution has been found to hinder good quality sleep - which can then put a strain on your organs.

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       It's not a good idea to disrupt the natural sleep-wake rhythm according to the experts, as they studied data collected from over 28,000 to see the impacts it can have, and found a clear link, reports The Mirror.

       Dr Jain-Bing Wang, a public health expert involved in the study said: “Our study suggests that higher levels of exposure to outdoor artificial light at night may be a risk factor for cerebrovascular disease.

       “Therefore, we advise people, especially those living in urban areas, to consider reducing that exposure to protect themselves from its potentially harmful impact,” reports by The Metro.

       The scientists analysed people from the same town, who all had a history of cerebrovascular disease (such as strokes and aneurysms) for six years, and out of the 28,300 people, 9000 had a stroke in this period - and 378 suffered other cerebrovascular disease.

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       Experts also analysed the light pollution each person was exposed to at night to see if there was a link, as they stated that exposure to bright lights at night could “lead to the body's circadian rhythm suppressing melatonin secretion”.

       This could then result in an increase in triglyceride levels, blood pressure and blood glucose levels, triggering vascular conditions.

       According to the NHS, symptoms of a stroke can be remembered with the word 'FAST'.

       These symptoms include:

       You can find more information about strokes and symptoms here.