macrobiotic

n. 1. (Physiol.) The art of prolonging life. [ 1913 Webster ]

2. Specifically: A philosophy or attitude that health and long life are promoted by adhering to a diet consisting mostly of whole grains, with some vegetables, beans, fruit, and moderate amounts of seafood. However, the absence of essential nutrients such as fat makes such a diet of questionable value if strictly adhered to. [ PJC ]