Regimen Sanitatis Salernitatum
This important 13th century medieval text, a blend of Christian and Muslim dietary traditions, considered food prejudices and taboos. Included are statements on a wide range of dietary issues. Foods to be particularly avoided were those that promoted the formation of black bile.
Other foods are described as "enemies of the sick," and to be avoided by Christians were apple, cheese, goat, hare, meat (salted), milk, peach, pear, veal, and venison.
Grivetti, L.E. (2000) Food prejudices and Taboos. Cambridge World History of Food. Cambridge University Press.