The belief is stubborn: eating after 8 p.m. would be bad for your health, and your waistline. After this schedule, we would store many more carbohydrates and lipids. Info or fake?
A preconceived idea… without real basis
For Pauline Pied, dietitian nutritionist, this is a myth that needs to be deconstructed: no, eating after 8 p.m. does not automatically lead to weight gain.
“At 8 p.m., there is no “switch” in the body or hormones that means that it is not good for your health or that it makes you gain weight.”
In other words, the body does not suddenly change its functioning at a specific time, as if a switch were flipped on. There is no magical mechanism that would cause everything you eat after 8 p.m. to be stored differently.
“Your body will not start to “store” after 8 p.m. There is nothing particular happening”she insists.
What some studies suggest
This doesn’t mean that dinner time is completely unimportant, however. A study published in Cell Metabolismconducted by Harvard researchers, showed that eating “late” could influence certain metabolism mechanisms. Participants who ate their meals later felt more hungry, expended less energy and had conditions that favored fat storage.
These effects are particularly linked to hormonal variations involving ghrelin and leptin, two key hormones in the regulation of hunger and satiety. Other research also suggests a link between late meals and loss of eating control, particularly among overweight people.
But these results remain to be qualified. They do not single out a specific time as problematic and often concern particular contexts. People who eat quickly and unbalancedly before bed.
The real issue: habits around dinner
In reality, the problem is not so much with the time as with what accompanies it. Eating late can actually become uncomfortable if the meal is very large, unbalanced, or followed immediately by bedtime. In this case, digestion can disrupt falling asleep.
“The only thing a late meal can really do is make it harder to fall asleep because people are still digesting.”specifies Pauline Pied.
But on the other hand, eating late can simply shift the natural rhythm of hunger. “Some people will not be hungry when they wake up and will eat breakfast later, which is consistent with how the body functions.“. Here again, demonizing a meal a little later than 7:30 p.m. to 8 p.m. does not necessarily hold.
Adapt at your own pace rather than following a strict rule
Rather than setting an arbitrary cut-off time, the specialist recommends above all listening to your feelings. “If you are hungry at 8:30 p.m., you can eat at 8:30 p.m. There will be no effect on weight loss or health.”
The main thing is to respect your biological rhythm and daily constraints. “Absolutely wanting to eat early can even be counterproductive, especially if it leads to arriving at dinner excessively hungry.”
In this case, a snack at the end of the afternoon can help to better distribute intake and avoid excesses in the evening. This approach helps stabilize energy without creating unnecessary frustration.
Not a question of time, but of balance
Ultimately, eating after 8 p.m. is not harmful in itself. What really matters is the quality of the meals, their quantity and whether they fit into your lifestyle.
“An unbalanced diet, too rich or consumed just before going to bed can indeed pose a problem. But the time, alone, is not enough to explain weight gain or an imbalance.”
Rather than following rigid rules, it is better to adopt a more flexible approach that listens to your body. As Pauline Pied reminds us, eating at 8 p.m. or later is not a problem… as long as it remains consistent with your needs and your daily life.