Why some breakfasts lead to more snacking later
A breakfast that's low in protein and fibre may leave you hungry again relatively soon, particularly if it's built mainly around refined carbohydrates. For some people, blood sugar rises and falls more sharply after this kind of meal, although that doesn't necessarily explain the hunger on its own. Either way, the result can show up as hunger not long after eating: less a snack decision than a second breakfast the first one didn't quite account for.
Do that most mornings and it stops looking like an isolated event and starts looking like a pattern: eat, feel fine briefly, get hungry again, snack, repeat. Each cycle seems minor. Repeated regularly, those extra snacks can affect how much you eat overall. That may have something to do with how satisfying the first meal was, rather than simply a lack of self-control.
A first meal with more protein and fibre may hold hunger off for longer and make hunger-driven snacking less likely. It won't eliminate all snacking (plenty of snacking has nothing to do with breakfast), but if you're consistently hungry soon afterwards, it's a straightforward place to look first.
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