“Snacking between meals is bad for you.”
Limited confidence because snacking is defined inconsistently and current systematic reviews could not draw a general conclusion about snacking and total energy intake in adults. Effects plausibly depend on the snack, portion, reason, timing and person.
Snacking is not automatically harmful or healthy. It can help meet nutrition or energy needs, or it can add food beyond hunger and displace more nutritious choices.
Research cannot separate “snacking” from what, why and how much people eat. A planned snack for hunger, exercise or medication is different from repeated distracted eating, and frequency alone does not describe diet quality.
Safety note: Rigid rules against snacks can be harmful during childhood, pregnancy, eating-disorder recovery or when medical treatment requires food. Frequent carbohydrate exposure can also matter for dental health, and diabetes medicines may require planned timing.
Talk to a healthcare professional if: Seek individualized advice if snacking is tied to binge eating, loss of control, low blood sugar, poor growth, unintended weight change, gastrointestinal symptoms or medication timing.
Do not judge a snack only by the clock. Consider whether it responds to hunger or a practical need, what it contains, and how it fits the rest of your day.
For one week, notice when you snack and why. Keep snacks that help hunger, energy or nutrition, and adjust portions or cues that lead to mindless eating.