My wife is 58 and in the last 3 years she can no longer eat any FRESH fruits of vegetables of any kind also has reaction to any green salsa sauces. she can eat canned fruits and vegs just noy any fresh items. also has to stay away tomatoe products. All of these items cause severe abdominal pain with gas. Often also vomits items up at times. Pain has been so bad at times we have had to go to emergency because we thought she was having a heart attack her chest hurt so bad. take about 2 days to go away.
See, allergy to food is only diagnosed on the basis of patients history although many laboratory testing of food available in market, but they just add cost to the patient, and also they are not reliable, so if you're allergic to food the best treatment is to avoid those food items, any fruit, any vegetables. Treatment is available but only temporary and without curing problem.