Abstract
Optimal nutrition has been visualized as that which maintains a level of metabolic normalcy so that when the organism is exposed to stress, the normal protective homeostatic mechanisms can be put into operation rapidly, with a minimum of strain, and for as short a time as possible. Because of this zone of homeostasis, it is difficult to establish the quantities of nutrients which provide optimal nutrition. These may vary considerably, depending upon individual biologic variability, sex, age, and both exogenous and endogenous stress. The attainment of optimal nutrition poses a real challenge to the nutritionist, but is within the range of a population educated to the proper use of an abundant and varied food supply.
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