How Late Is Too Late for Dinner? Does Eating Earlier Help with Weight Loss and Blood Sugar?

How late is too late for dinner? Does eating earlier help with weight loss and blood sugar?

Discover how dinner timing affects blood sugar, metabolism and weight loss. Dietitians explain whether eating earlier helps, how late is too late for dinner, and practical tips for shift workers, late-night suppers and healthier eating habits.

An 8-hour eating window stood out for weight loss, but the full picture is more complicated

A pooled analysis of individual data from five time-restricted eating trials involving 124 adults linked shorter eating windows with modestly greater weight loss. Eight-hour TRE was associated with greater weight loss than 12-hour TRE and controls, while cardiometabolic outcomes showed no consistent relationship with eating-window duration and several weight associations weakened after adjustment.

Time-restricted eating provides modest weight loss benefits for adults with obesity and prediabetes

A Johns Hopkins Medicine study reports evidence that time-restricted eating (TRE)—a form of intermittent fasting that involves eating only during a consistent daily 8–10-hour window—can cause modest weight loss in adults with obesity and prediabetes or diet-controlled type 2 diabetes.