First off, a dietary change can be therapeutic. People who eat a lot of animal fat from meat and full-fat dairy, overall, tend to have more reactions than people who avoid these foods. Our body takes dietary fat and makes it into many things, including inflammation- reducing compounds called prostaglandins. Along with helping to prevent allergic reactions, eating deep-water fish can also help to protect us from heart disease and maybe even cancer. In any event, it's a good habit to get into.
Many people know that peanut allergies can cause serious allergic reactions.
But it seems that some people may have a low-grade reaction to other common foods. Other common foods known to cause allergic reactions include wheat, dairy, corn, shellfish, and citrus. Many of us in clinical practice ask our patients to try avoiding foods suspected of causing a reaction, and often they feel better. The science on this practice of limiting certain foods is pretty weak, but a brief trial of avoiding wheat or dairy for a while to see what happens is not a big deal. Acupuncture seems to help some people with allergies, even though there is little research supporting it.