Source:http://linkedlifedata.com/resource/umls/id/C1818978
GO: Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a food stimulus; food is anything which, when taken into the body, serves to nourish or build up the tissues or to supply body heat. [GOC:add, ISBN:0721601464]