When people skip breakfast, they end up eating most of their food at night, which makes their body worse at handling sugar and hurts their sleep.
Evidence from Studies
Supporting (2)
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When people ate dinner at 10 PM instead of 6 PM, their blood sugar spiked higher and stayed up longer — proving eating late makes your body worse at handling sugar.
When pregnant women with diabetes eat later at night, their blood sugar stays high overnight, which makes it harder for their bodies to stay healthy — this shows eating late is bad for blood sugar control.
Contradicting (2)
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Association of Skipping Breakfast with Metabolic Syndrome and Its Components: A Systematic Review and Meta-Analysis of Observational Studies
This study says skipping breakfast is bad for blood sugar, but it doesn’t say anything about eating late at night or how that affects sleep or glucose tolerance.
People who ate all their meals between noon and 8 PM didn’t sleep worse than others — so eating late doesn’t necessarily ruin your sleep.