From Longman Dictionary of Contemporary Englishbe reared on somethingbe reared on somethingSSCto be given a particular kind of food, books, entertainment etc regularly while you are a child children reared on TV and video games → rear
Examples from the Corpus
be reared on something• We were reared on junk food and B-movies.• Broilers are not kept in cages but are reared on deep-litter floors in large houses.• The gilts are reared on land which is dry and exposed to the sun. 