Is There A Cure For Food Allergies Treatments Explained?

No, there is no cure for food allergies. However, treatments now exist that can reduce the severity of reactions and raise the threshold for what triggers a response. These treatments do not eliminate the allergy, but for many people they can provide meaningful protection against accidental exposure.

Is There a Cure for Food Allergies?

The short answer is no. No treatment currently eliminates a food allergy permanently. No medication, diet, or supplement can make the immune system stop recognizing a food allergen as a threat.

What has changed in recent years is the availability of treatments that reduce the risk of severe reactions. The most well-studied of these is oral immunotherapy (OIT). It does not cure the allergy. It raises the amount of allergen a person can tolerate before symptoms appear. This is called desensitization.

For people with peanut allergy, Palforzia is an FDA-approved form of OIT. It is a treatment, not a cure. People taking it must continue taking it daily to maintain protection. If they stop, the protection fades.

No other food allergy currently has an FDA-approved treatment. Some clinics offer OIT for milk, egg, and other foods. But these treatments are not standardized and carry their own risks. They should only be done under the supervision of an allergist.

How Does Oral Immunotherapy Work?

Oral immunotherapy works by exposing the immune system to tiny amounts of the allergen over time. The amount is gradually increased under medical supervision. The goal is to train the immune system to tolerate more of the food without reacting.

The process starts with a very small dose, often less than a milligram. This is given in a doctor’s office under observation. If the patient tolerates the dose, the amount is increased slowly over weeks or months.

The maintenance dose varies by patient. For Palforzia, the maintenance dose is 300 mg of peanut protein. That is roughly equal to one peanut.

It is important to understand what OIT achieves and what it does not. It raises the threshold for a reaction. It does not eliminate the risk. People on OIT can still have reactions if they eat too much of the allergen or if other factors affect their immune system, such as exercise or illness.

Some people on OIT may also develop eosinophilic esophagitis (EoE), a condition where immune cells build up in the esophagus and cause difficulty swallowing. Studies suggest EoE develops in about 5 to 10 percent of people on OIT. The condition often improves when the treatment is stopped.

What Is Palforzia and Who Can Take It?

Palforzia is the only FDA-approved treatment for peanut allergy. It is a form of oral immunotherapy. It is approved for children aged 4 to 17 years with a confirmed peanut allergy. Adults can also take it, but the FDA approval is focused on children and teens.

Palforzia is not a cure. It is designed to reduce the risk of severe reactions from accidental peanut exposure. It does not allow people to eat peanuts freely. Patients must continue to avoid peanuts in their diet. The treatment simply provides a layer of protection if they accidentally eat something with peanuts.

The treatment involves three phases. The first phase is a single day of dose escalation in a doctor’s office. The second phase is a gradual increase in dose over several months. The third phase is a daily maintenance dose that continues indefinitely.

Side effects are common, especially during the dose increase phase. These include abdominal pain, throat tightness, nausea, and hives. Some patients experience severe reactions requiring epinephrine. For this reason, the first dose of each increase is given under medical supervision.

Palforzia is not right for everyone. People with uncontrolled asthma or a history of severe anaphylaxis may not be good candidates. An allergist can help determine if it is appropriate.

Can Food Allergies Be Outgrown?

Some food allergies resolve on their own. This is more common with certain foods than others.

Milk, egg, wheat, and soy allergies are often outgrown. About 80 percent of children with milk or egg allergy will outgrow it by age 16. Peanut, tree nut, fish, and shellfish allergies are less likely to resolve. Only about 20 percent of children with peanut allergy outgrow it.

Outgrowing an allergy is not caused by any treatment. It happens when the immune system naturally becomes less reactive to the food over time. Some children who outgrow an allergy may develop tolerance gradually. Others lose the allergy more suddenly.

Doctors can test for outgrown allergies using blood tests and food challenges. A food challenge is done in a doctor’s office. The patient eats small amounts of the food under observation to see if a reaction occurs.

It is possible for a food allergy that was outgrown to return later. This is rare but has been reported, especially with tree nuts and shellfish.

What Treatments Are Available for Children vs Adults?

Treatment options differ by age.

For children, Palforzia is approved for peanut allergy starting at age 4. Many allergists offer OIT for other foods like milk and egg in younger children, but these are not FDA-approved treatments. They are offered as a clinical service based on studies.

For adults, few treatment options are available. Palforzia is not typically used in adults, though some allergists may prescribe it off-label. Most adults are managed with strict avoidance and carrying epinephrine.

The main reason treatments focus on children is that the immune system is more adaptable early in life. The goal is to create tolerance or desensitization before the allergy becomes more entrenched. However, no large studies have confirmed that starting OIT earlier in life produces better long-term outcomes.

For both children and adults, the foundation of food allergy management remains the same: strict avoidance of the trigger food, careful reading of ingredient labels, and carrying epinephrine at all times.

Are There Experimental Treatments on the Horizon?

Several experimental approaches are being studied, but none are close to FDA approval.

Epicutaneous immunotherapy (EPIT) uses a patch that delivers a small amount of allergen through the skin. Viaskin is a peanut allergy patch that has been studied in clinical trials. Results have been modest. Some patients achieved a higher threshold for reactions, but the effect was not as strong as OIT.

Sublingual immunotherapy (SLIT) places a small amount of allergen under the tongue. It is less effective than OIT but also less likely to cause severe side effects. It is not currently approved for food allergies in the US.

Biologic drugs are also being studied. Dupilumab, which is already approved for asthma and eczema, is being tested as a treatment for food allergies. Early results suggest it may reduce the number of foods a person is allergic to, but the data is preliminary.

Vaccines for food allergies are in very early stages of research. They aim to train the immune system not to react to the allergen. No vaccine has reached human trials for food allergies.

None of these approaches are ready for widespread use. People interested in enrolling in a clinical trial should discuss options with an allergist.

What About Epinephrine and Emergency Treatments?

Epinephrine is the only treatment that can stop a severe allergic reaction. It works by relaxing the airway muscles, raising blood pressure, and reducing swelling. It is given as an injection into the outer thigh.

People with a diagnosed food allergy should carry two epinephrine auto-injectors at all times. This is not optional. Studies show that about 20 percent of severe reactions require more than one dose of epinephrine.

Antihistamines like Benadryl are not a substitute for epinephrine. They can treat mild symptoms like hives or itching. They do not stop anaphylaxis. Relying on antihistamines in a severe reaction can be dangerous.

Some people ask about using steroids or asthma inhalers during an allergic reaction. These are not first-line treatments. They may be used after epinephrine under medical guidance, but they should never replace it.

The key point is that epinephrine is safe and effective. The risks of not using it in a severe reaction are far greater than the risks of using it when it may not be needed. If you suspect a severe allergic reaction, use epinephrine and call 911 immediately.