An estimated 50% –70% of people who are allergic to natural latex are also susceptible to other "plant allergies", most notably, fruits. Certain plants contain proteins (such as the nutrient-storing protein in potato tubers), that can be very similar to the latex proteins present in the sap of the rubber tree.

Not all food-allergic individuals are sensitive to latex, and not all patients with latex allergies will have problems with these foods. However, the following foods have been reported to cross-react to some degree with latex proteins:

Other suspects include: grapefruit, mushrooms, bell pepper, mango, almonds, buckwheat, lettuce, oranges, pepper, mustard, bamboo shoots, coconut, and peppermint.