Everything should be fed if it has to work. This is true in case of everything right from the automobiles which require gasoline or fuel to the living cells which requires food. Nutrition is an organic process of nourishing or being nourished; the process that allows organism to assimilate the food and use it for growth, work and maintenance.

Often a person who's suffering from depression will feel disconnected from society and reality. It can cause isolation and can also pull them away from friends, family, work and can lead to loneliness.