For most people trying to lose weight, fat is the first thing that is reduced. It is best to lose weight slowly through lifestyle changes rather than crash dieting. Healthy weight loss is around 2 pounds per week. Making subtle changes like reducing fat but not eliminating favorite foods, using low-fat substitutions, and focusing on filling foods like avocado and fiber can help lose weight healthily. A low-fat diet does not need to eliminate creamy textures and some fat is important to absorb vital nutrients.