A 2-minute self-check on how your gut may be fragmenting your sleep — and small changes that help you rest.
Your gut—sleep impact score
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Digestion, late meals, alcohol and light all influence how fragmented your sleep is. Because gut-derived serotonin is a building block for melatonin, looking after digestion is one piece of sleeping better — alongside steady sleep timing.
More than 90% of the body's serotonin is produced in the gut, which is part of why digestion, mood and sleep are so tightly linked.
Evidence on diet and the microbiome is genuinely promising but still developing; results vary between people, and lifestyle steps work alongside — not instead of — medical care.