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The Role of Sleep in Immune System Support

Bushra Ramadan

Why a good night's rest helps your body fight infection, and simple ways to protect your sleep during busy weeks.

A young man sleeping peacefully in a bed with white linen

Most of us notice that we catch colds more easily when we are run down. Sleep research helps explain why.

What happens at night

During deep sleep the body produces and releases proteins that help coordinate the immune response. Studies show that people who regularly sleep fewer than six hours are more likely to fall ill after exposure to a virus.

Protecting your rest

Keeping regular bedtimes, limiting screens before bed and cutting caffeine after lunch are small changes that sleep specialists recommend first. If problems persist, a doctor can check for conditions such as sleep apnoea.