美国 现代美国 

 preserve one's health; keep in good health Health： 《Nutritionist new discovery the world: fat because you eat too fast》 Read works of Mac David at 百家争鸣

　　Nutritionists, has been engaged in diet therapy, nutrition, psychology and yoga teaching and promotion of the "pace of life - metabolism - body weight and health," the pioneer and leader in the field. He has served as the United States leading care facilities - Berkshire Valley Farm's chief instructor and consultant for Disney, next to the world-famous company's done such guidance.