A new method of gene slimming: Scientists have found through research that two parts of human genes are mainly responsible for giving instructions to fibers on human cell membranes, thus controlling the amount of food that cells convert into heat. For example, they are like faucets. Once the genetic structure changes between generations, it will lead to too many or too few fat cells in the human body. Therefore, people are classified as obese or emaciated at birth, and what scientists do is to find out the answer. This is a healthy and effective weight loss method popular in the new century.