1) Bioscience 2) Food science 3) Life science 4) Nutrition science 5) Science of nutrition 1) Macrobiotic 2) Macrobiotics 
• (n.) That part of the medical or hygienic art which relates to diet or food; rules for diet.
<study> The study and regulation of the diet. ... (12 Dec 1998) ... 
(di″ә-tet´iks) the science of diet and nutrition.
Concerned with nutritional planning.
Di`e·tet'ics noun That part of the medical or hygienic art which relates to diet or food; rules for diet. « To suppose that the whole of dietetics lies in determining whether or not bread is more nutritive than potatoes.» H. Spencer. 
Type: Term Pronunciation: dī′ĕ-tet′iks Definitions: 1. The practical application of diet in the prophylaxis and treatment of disease.
Dietetics is the study of food in relation to the promotion and maintenance of health. Despite the attempts of some authors to claim it is a new science, it has been known and practised for centuries, and the term dietetics precedes the Second World War.
[n] - the scientific study of food preparation and intake
the study and regulation of the diet.
noun the scientific study of food preparation and intake
Specialized branch of human nutrition, dealing with the promotion of health through the proper kinds and quantities of food. Therapeutic dietetics has a large part to play in the treatment of certain illnesses, such as allergies, arthritis, and diabetes; it is sometimes used alone, but often in conjunction with drugs. The preventative or curati...