As it relates to all ingredients, but especially with preservatives, it is crucial that they are calculated, and measured, by their relative weight, not volume, to guarantee that adequate ratios are being used.
Eliminate all foods that are at all possible allergens for you. Other frequent allergens are corn, citrus, strawberries, chocolate, yeast and nightshades (potatoes, eggplant, peppers, and tomatoes). Some people are allergic to certain meats, and the most likely ones are the most consumed ones: beef and chicken.
As its name suggests, the no red meat diet excludes all types of red meat, including pork, beef and lamb, though it isn't an officially-named diet.