After-dinner nibbling—that is, continuing to nibble on snacks, sweets, or leftovers—often seems harmless, but it can have some less-than-helpful effects:
- Worse digestionEating continuously in the evening keeps digestion active when the body is preparing for sleep. It can promote reflux, bloating, or poor sleep.
- Less fat is burned overnight.
- More "nervous" hunger than real hungerAfter dinner, we often eat out of habit, boredom, or tiredness, not because we're physically hungry.
- Calories that are easy to overlookBiscuits, crisps, cheese, and “chunky” chocolate add up quickly without leaving you feeling very satiated.
- Appetite regulation: leaving a nighttime interval without food helps some metabolic mechanisms and makes hunger signals clearer the next day.
- Quality of sleep: sugar, alcohol or late meals can disturb sleep.
- Glycemia: worsens control.
- Increases the risk of being overweight in the long run
A Johns Hopkins Medicine study compared the same dinner eaten at 18 pm and 22 pm: the later dinner caused higher blood sugar, less fat burning, and more cortisol.
The most important results were these:
- with dinner at 22pm:
- the glycemic peak was approximately 18% higher
- cortisol approximately 5% higher
- fat burning at night approximately 10% lower
The most interesting part is that the effects were much stronger in “early birds”:
- blood sugar up to 30% higher
- reduction of fat burning up to 20 % the next morning.
Read also:
- Eating healthily can also be done on a budget.
- Emotional hunger has nothing to do with appetite
- Good reasons to eat slowly
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