Researchers Urge Dinners 3 Hours Before Bed as Studies Link Late Eating to Higher Health Risks
Updated
Updated · BBC.com · Aug 10
Researchers Urge Dinners 3 Hours Before Bed as Studies Link Late Eating to Higher Health Risks
2 articles · Updated · BBC.com · Aug 10
Summary
At least 3 hours before bedtime is the recommended dinner window, with researchers advising the largest meal earlier in the day and a lighter evening meal.
More than 800 adults in a 2022 study processed a glucose drink worse 1 hour before bed than 4 hours earlier, showing higher blood sugar and lower insulin when eating closer to sleep.
Earlier eating also tracked with better weight outcomes: a 420-person Spanish weight-loss study found earlier lunch eaters lost more weight faster, while later eating was tied to more hunger and greater fat storage.
More than 100,000 people in France showed another link, with later breakfast associated with higher cardiovascular risk and longer overnight fasting from earlier evening meals tied to better heart health.
The findings point to circadian rhythm as the driver, with melatonin and chronotype affecting glucose control—especially in night owls, shift workers and some people with diabetes- or obesity-linked genes.