Articles / Nutrition · Timing

Late Meals Do Not Make You Fat

Calories at nine in the evening are not different from calories at three in the afternoon. The clock myth is a heuristic.

The rule that you should not eat after eight in the evening is one of the most common pieces of nutrition advice, and one of the least scientifically supported. Calories consumed at any hour are processed by the same mechanisms. Your body does not have a metabolic switch that flips at sundown.

Where the rule does help, occasionally, is as a behavioral nudge. People who graze on snacks while watching television often consume hundreds of extra calories without realizing it. A simple cutoff time becomes an easy way to stop the grazing. The mechanism is behavioral, not metabolic.

If the cutoff works for you, keep it. If it does not, if your training, your social life, or your hunger pattern make late meals natural, eat. What matters is your daily total and the quality of those calories. The clock on the wall is not a metabolic instrument.

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