Melatonin production falls if the lights are on

Having the lights on before bedtime could result in a worse night's sleep, according to a study to be published in the Journal of Endocrinology and Metabolism.

The research shows that the body produces less of the sleep hormone melatonin when exposed to light. Sleep patterns have been linked to some types of cancer, blood pressure and diabetes. The US researchers also found lower melatonin levels in shift workers.

Lifestyles may have moved on from a day/night rhythm, but it seems the human body has not.The pineal gland produces melatonin through the night and starts when darkness falls. Researchers have shown that switching on lights in the home switches off the hormone's production.

Source - BBC

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