Bitter gourd can lose weight because it contains high-energy leptin, which is considered as a historic breakthrough and development of weight loss research in western countries. A special ingredient as expensive as gold was found in bitter gourd: high-energy lipid, RPA, which is called "fat killer", can reduce the intake of fat and polysaccharide by about 40%-60%; Experts from Shanghai Institute of Chinese Academy of Sciences have successfully overcome the difficulty of extracting high energy to reduce blood fat by drawing lessons from the slimming fever of bitter gourd popular in western countries in recent two years. It can keep more than 90% biological activity of bitter gourd in a set of biological extraction equipment worth tens of millions of yuan and extract and concentrate it into S- cellulose. Pharmacological studies have confirmed that high-energy serum albumin does not enter human blood, but only acts on small intestine, which is an important part of human body to absorb fat. By changing the mesh of intestinal cells, it prevents the absorption of high-calorie macromolecules such as fat and polysaccharide, thus accelerating the absorption of small-molecule nutrients in the body, and does not participate in human metabolism, so it has no toxic and side effects.