If you’re wondering how Alli works, the answer is surprisingly simple, it doesn’t affect your appetite or metabolism, but instead works directly in your digestive system to block a portion of the fat you eat from being absorbed. As explained in , this means fewer calories are taken in from fat-containing meals, making it a practical, non-stimulant option for those focused on structured eating habits. It’s not a quick fix, but when paired with a lower-fat diet, it can create a steady, sustainable edge in your weight loss journey.