A method for preparing a food composition for animals comprising (a)
accessing at least one database that comprises a first data set relating
functional genomic profile of a biofluid or tissue sample from an animal
to physiological condition and optionally genotype of the animal; (b)
accessing at least one database that comprises a second data set relating
to effects of bioactive dietary components on functional genomic profile;
(c) by use of an algorithm drawing on these data sets, processing input
data defining physiological condition and optionally genotype of a
subpopulation of animals to derive a nutritional formula promoting
wellness of one or more animals of the subpopulation; and (d) preparing a
food composition based on the nutritional formula.