You may fail to lose weight even though you eat very little and do a lot of exercise, what's worse, your weight may rebound easily after losing a little. Then what makes you obese?
The lack of fat-controlling compositions, which can prevent adipogenesis and burn fat, will lead to the imbalance between caloric intake and consumption. When the intake is greater than consumption, the excessive heat will convert into fat. And the fat will gradually accumulate if it can't be timely burned, broken down and released. This is the basic reason for your obesity!
Therefore, the crucial step to lose weight is to prevent fat synthesis and accumulation from the source if you want to lose weight quickly. Then you need to eliminate the extra fat by improving your metabolic capability for calories and fat.