1) Dietetics 
• (n.) The art of prolonging life.
Dietary system of organically grown foods. It originates in Zen Buddhism, and attempts to balance the principles of yin and yang, thought to be present in foods in different proportions. ...
<study> A theory of diet which places chief emphasis upon cereals and grains, fish and certain vegetables. Based upon the link between potassium and sodium in the body. ... (19 Jan 1998) ... 
This Japanese philosophy is known in the West by its dietary principles and practice of whole foods cooked in a prescribed way, and in accord with required combinations. High fiber is generally accepted as a tenet, based on organically grown food. This philosophy is a commitment to a particular regime that involves many considerations that are bro…...
Mac`ro·bi·ot'ics noun (Physiol.) The art of prolonging life. 
Type: Term Pronunciation: mak′rō-bī-ot′iks Definitions: 1. The study of the prolongation of life.
Macrobiotics is the art of prolonging life.
[n] - the theory of promoting health and longevity by means of diet (especially whole beans and grains)
macrobiotics 1. The study of the prolongation or extension of life; long-lived. 2. The theory or practice of promoting well-being and longevity, principally by means of a diet consisting chiefly of whole grains and beans.
noun the theory of promoting health and longevity by means of diet (especially whole beans and grains)
Dietary system of organically grown foods. It originates in Zen Buddhism, and attempts to balance the principles of yin and yang, thought to be present in foods in different proportions