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Meal timing & diet: what the research actually says

When you eat shapes how you sleep: late large meals hurt, the eating window matters, and a few foods have real (small) effects.

All studies · 5

Effects of diet on sleep qualitySt-Onge MP, Mikic A, Pietrolungo CE · Advances in Nutrition 7(5):938–949 · 2016Higher fibre and lower saturated fat/sugar predict deeper sleep; kiwifruit and tart cherry show promise.The role of protein in weight loss and maintenanceLeidy HJ, Clifton PM, Astrup A, et al. · American Journal of Clinical Nutrition 101(6):1320S–1329S · 2015Higher-protein diets (~1.2–1.6 g/kg) improve satiety, preserve lean mass and aid maintenance — 'a dedicated protein source every time you eat'.The health impact of nighttime eating: old and new perspectivesKinsey AW, Ormsbee MJ · Nutrients 7(4):2648–2662 · 2015Large late meals impair sleep and metabolic health; small protein-rich snacks are less problematic.A smartphone app reveals erratic diurnal eating patterns in humans that can be modulated for health benefitsGill S, Panda S · Cell Metabolism 22(5):789–798 · 2015Most people eat across >15 h/day; restricting to a 10–11 h window led to weight loss and better sleep with no other instruction — the 'eating window' rule.Relationship between food intake and sleep pattern in healthy individualsCrispim CA, Zimberg IZ, dos Reis BG, Diniz RM, Tufik S, de Mello MT · Journal of Clinical Sleep Medicine 7(6):659–664 · 2011Higher fat intake close to bedtime correlated with worse sleep efficiency and longer sleep onset.

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Frequently asked questions

What does the research say about meal timing & diet?

Higher-protein diets (~1.2–1.6 g/kg) improve satiety, preserve lean mass and aid maintenance — 'a dedicated protein source every time you eat'.

How do I track meal timing & diet?

SleepShred logs it in about 20 seconds a day and then compares your nights with and without it, so you see the effect on your own sleep instead of the study average.

Is SleepShred free?

No. SleepShred Pro is $4.99 per month or $29.99 per year, with no free trial and no ads. Everything stays on your iPhone.

Track it, don't guess it

SleepShred turns this research into a 20-second daily habit: log your night, see which of your own behaviours move your sleep, and screen for the disorders nobody diagnoses.

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Educational summary of published research, not medical advice. Screening scores are not diagnoses. If a score is elevated or you feel unwell, talk to a clinician.