The size of your stomach can impact upon the amount you eat. A new study has found that if you have a big stomach, you're likely to take in more calories to produce a feeling of fullness. Researchers used a non-invasive imaging technique to measure the stomach volume of volunteers, who were fasting. They found that those with a larger stomach volume, along with a higher Body Mass Index, felt less full after drinking a liquid meal. In fact, in comparison to the thin volunteers, the larger people drank an extra 225 calories before they felt full, and took in a larger volume of fluid.

Source: Gastroenterology, February 2004.