The only low-calorie event in people's lives was starvation. Those who could cope with a temporary lack of food were the ones who survived. Our bodies, therefore, have developed this built-in mechanism to help us survive in the face of low food intake. When researchers compare overweight and thin people, they find that they eat roughly the same number of calories. What makes overweight people different is the amount of fat that they eat.
Thin people tend to eat less fat and more complex carbohydrates.
Losing weight is not something one can do overnight. A carefully planned weight-loss program requires common sense and certain guidelines. Unfortunately, there's a lot of misinformation floating around, and desperate people are easily duped and ripped off. Millions of Americans are trying to lose weight, spending billions of dollars every year on diet programs and products. Often they do lose some weight.