Late-night eating sabotages sleep—here's why timing matters

Late-night eating sabotages sleep—here's why timing matters

A diagram of a human body with the title "Effects of Sleep Deprivation" on the left, illustrating symptoms like fatigue and difficulty concentrating, along with text describing causes, symptoms, and treatments of sleep disorders.

Late-night eating sabotages sleep—here's why timing matters

Eating late at night can interfere with sleep, even if it feels harmless. The timing of meals affects hormones and the body's natural wind-down process. Experts suggest finishing dinner a few hours before bed to avoid disruptions.

Late-night eating can suppress melatonin, the hormone that signals the brain it's time to sleep. It also raises cortisol levels, which delays deep sleep and may cause morning grogginess. Over time, this can throw off the body's internal clock, making it harder to relax before bed.

A heavy meal or sugary foods close to bedtime are particularly problematic. They trigger digestion when the body should be resting, reducing sleep quality. However, occasional late snacks aren't a major issue—the key is minimising metabolic 'noise' for better rest. For those who need a light bite before bed, small options like tart cherries, nuts, or half a banana with nut butter are recommended. These choices are less likely to disrupt circadian rhythms than a full meal.

The best approach is to finish eating two to three hours before bed. This gives the body time to digest and prepares it for restful sleep. When hunger strikes late, a mindful snack can help without causing significant disruption.

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