Sleeping in Darkness Protects Your Heart: Study Warns Against Light and TV
A new study reveals that sleeping with dim lights or near a TV increases the risk of heart disease and stroke, especially for adults over 40.
Many people keep a dim lamp on or sleep with the TV on thinking it aids relaxation. However, a large-scale study has shown unexpected health risks.
Study Findings
Researchers tracked 90,000 adults in the UK over 9 years using devices that monitored light exposure during sleep. Even low-level light exposure increased the risk of heart disease by over 30% and also raised the likelihood of stroke. Overall, night-time light exposure increased cardiovascular risk by more than 50%.
How Light Disrupts the Body
Night-time light disrupts the body’s internal clock, affecting hormone secretion, metabolism, blood pressure, and blood sugar, putting extra stress on the heart. The effects were stronger in adults over 40, with slightly higher risks observed in women.
Tips for Better Sleep
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Keep your bedroom completely dark; turn off lamps and cover LED lights.
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Use thick curtains to block external light.
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Avoid sleeping with the TV or light-emitting devices on.
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If light is necessary, use very low-intensity illumination, equivalent to a few distant candles.
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