Obese men feel less hungry after eating high-protein meals and eat less afterward when they eat meals with more protein, no matter if it's high-protein or just enough protein.

When lean men eat meals with more fat or protein instead of lots of carbs, they feel less hungry, fuller longer, and end up eating less food later.

Meals with more protein tend to make people eat less at their next meal.

Even small changes in how much protein is in a meal — not huge amounts — can help people feel fuller and eat less, whether they’re lean or obese.

Eating more protein makes you feel fuller for longer, so you’re less likely to snack or eat too much later.

Some studies show that eating more protein helps people lose more weight and body fat, but not all studies agree on this.