Peanut

Studies in people

• Benefit

  Early feeding protection³

  In infants, eating peanut protein early cuts peanut allergy by about 80%, but waiting makes it work less well.

• Open question

  Allergy relief options⁶

  Scientists are testing ways to help people with peanut allergy, but no treatment works perfectly for everyone.

• Benefit

  Early feeding and allergy risk⁷

  Feeding peanut to babies at high risk cut peanut allergy later, compared with avoiding peanut.

• Open question

  Skin patch desensitization⁹

  A peanut patch helped peanut-allergic toddlers tolerate more peanut, though some had allergic reactions.

• Benefit

  Oral treatment for food allergy¹⁰

  In young children with peanut allergy, peanut drops under the tongue helped most tolerate peanuts, especially in 1- to 2-year-olds.

• Benefit

  Food allergy prevention¹⁴

  Feeding babies peanut early may help stop peanut allergy, and new treatments are being tested.

• Benefit

  Combined allergy therapy¹⁵

  In people with peanut allergy, peanut oral immunotherapy plus omalizumab may work better than oral immunotherapy alone at reducing reactions.

• Benefit

  Infant allergy prevention¹⁶

  In high-risk infants, introducing peanut early is now widely accepted as a way to prevent peanut allergy.

• Benefit

  Lasting food tolerance¹⁷

  In children who ate peanut as babies, peanut allergy was much less common years later.

• Benefit

  Food allergy treatment¹⁸

  In children, peanut drops under the tongue let most eat more peanut without a reaction, lasting weeks after stopping.

• Benefit

  Cholesterol and heart risk¹⁹

  In men with high cholesterol, eating peanuts for four weeks improved cholesterol levels and lowered estimated heart risk.

• Benefit

  Allergy treatment results²⁰

  In children given peanut treatment, those in remission had fewer reactions and better quality of life two years later.

• Benefit

  Gut bacteria in children²¹

  In school children, eating roasted peanut snacks changed gut bacteria, boosting helpful kinds and cutting some harmful ones.

• Benefit

  Tiny doses build tolerance²⁴

  In children with peanut allergy, tiny daily doses of peanut helped more kids tolerate peanuts than avoiding them.

Animal and lab studies only

• Benefit

  Allergen binding reduced²⁷

  In lab studies, procyanidin C1 and chlorogenic acid from berries lowered peanut allergen Ara h 2's IgE binding by 37% and 50%.

Allergies and intolerances

These are about people with an allergy, an intolerance or coeliac disease. The signal is about the ingredient itself, and these are about the person eating it, so the signal does not count them.

• Rising food allergy²

  Peanut allergy in children rose in the US and UK, and peanut proteins can trigger severe reactions.

• Allergy reaction risk⁴

  In people with peanut allergy, peanut oral immunotherapy raises the risk of severe allergic reactions compared with avoiding peanuts.

• Lifelong food allergy management⁵

  Peanut allergy often lasts a lifetime, so people manage it by avoiding peanuts and keeping emergency medicine.

• Reaction severity markers⁸

  In people with peanut allergy, antibodies against Ara h 2 and Ara h 6 tracked with how severe their reactions were.

• Childhood food allergy¹¹

  Peanut allergy affects 1% of preschoolers, and children usually do not outgrow it.

• Severe food reactions¹²

  Peanut allergy is the most serious food allergy because it lasts and can cause severe reactions.

• Lifelong food allergy¹³

  Peanut allergies are one of the most common food allergies and often last a lifetime.

• Severe food allergy reactions²²

  Peanut allergy often starts in childhood and can cause severe reactions that last a lifetime.

• Allergy persistence over time²³

  Children with peanut allergy did not outgrow it, even many years later.

• Severe allergic reactions²⁵

  Peanut oleosins may be tied to severe allergic reactions, and roasting peanuts in the shell seems to make them stronger.

Single cases of misuse or overdose

One person or one incident, such as an accidental overdose or a mistake in a kitchen or factory. They are real, but a single case does not show what happens at normal amounts, so the signal does not count them.

• Allergic reaction to hidden food²⁶

  A woman with a peanut allergy had a whole-body reaction after eating soup that contained undeclared peanut flour.

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least one finding in people. When most findings in people point one way, the page leans that way (“Mostly”), and every finding is still shown. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.