Ice is just water in a solid state. Your body doesn’t care about the phase. It only cares about the H2O molecules inside.
When you eat ice, your stomach melts it. That meltwater gets absorbed just like a glass of tap water. So yes, technically, you’re hydrating.
But there’s a twist. Ice takes up more volume than liquid water. You might eat a cup of ice, but you’re only getting about 90% of that as water. The rest is air and expansion space.
The energy burn myth
Here’s where it gets fun. Some claim ice is a “negative calorie” food. The idea: your body burns calories to warm the ice up.
Sure, melting ice does use a tiny bit of energy. But we’re talking about one calorie per cube. That’s like burning off one sesame seed. Not exactly a weight-loss hack.
So, no, munching on ice won’t cancel out that donut. Sorry. But it will hydrate you—eventually.
