Why some breakfasts lead to more snacking later
A fast-digesting, low-protein breakfast tends to leave the body without much to draw on within an hour or two: not much protein, not much fibre, nothing that takes long to break down. For some people, blood sugar also rises and falls more sharply after this kind of meal, which can add to the effect. Either way, the result often shows up as hunger not long after eating, less a snack decision than a second breakfast the first one didn't 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 on its own seems minor. Repeated daily, it adds up to a lot of eating that started from a meal not built to last, not from a lack of self-control.
A first meal with more protein and fibre usually holds hunger off for longer and produces a steadier response overall. It won't eliminate all snacking (plenty of snacking has nothing to do with the first meal at all), but it removes one of the more mechanical, easily-fixed triggers for it.
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