Homeostasis by definition is the equilibrium among the body systems necessary to survive and function properly. So diet is a very important factor to maintain tain this propper functioning of the organism, which is an important factor of metabolism. On the other hand food posses different levels of nutrients as are compounds, so calculating the necessary intake of micronutrients is quite difficult and each source of food is rich in several components, therefore a well-balanced diet accomplishes the micronutrient intake and add additional elements, whats more the body absorbs better each micro nutrient in the natural element than in a sinthetic manner, sometimes the molecular composition is not absorbed so easily or is not so stable, on other ocation the quatities are superior to the needed one and there are only wasted.