In reality, Nutrition matters far more than calories, protein, fat, and carbohydrate etc. Recent studies in the USA found nutrition has the relationship with mood, has the characteristic of antiinflammation, and even has the function of lower blood pressure such as DASH diet. Nutritional Medicine is a science-based medicine and sees each person as an integrated whole. It looks for the underlying causes, which, although often partly genetic, are usually very much, tied up with nutritional, lifestyle and environmental factors. It provides a holistic outlook on how nutrition impacts health, the relationship between diet and disease, as well as a focused understanding of how nutritional, dietary, lifestyle and environmental factors impact wellbeing through the lifespan. Nutritional Medicine combines food as medicine traditions and dietary therapy with recent scientific advances in nutritional biochemistry and therapeutics, which are now used by naturopathic, conventional and holistic practitioners alike in USA.