Cashew Allergy: Causes, Symptoms, Preventions, and Diagnosing | The Lifesciences Magazine

A cashew allergy occurs when the immune system mistakenly identifies proteins in cashews as harmful substances. In response, the body releases histamines and other chemicals, leading to allergic reactions

1. Cashew Allergy: Understanding,
Managing, and Preventing
Reactions

Source-Kimmy farm

Cashew allergy is one of the more severe food allergies, affecting both children and adults
worldwide. As cashews become increasingly prevalent in various cuisines and processed foods,
understanding this allergy becomes critical for those affected and their caregivers. This article
explores the causes, symptoms, diagnosis, and management of cashew allergy, offering valuable
insights for living safely with this condition.
What is Cashew Allergy?
A cashew allergy occurs when the immune system mistakenly identifies proteins in cashews as
harmful substances. In response, the body releases histamines and other chemicals, leading to
allergic reactions that can range from mild to life-threatening. This type of allergy is a subset of
tree nut allergies, which also include almonds, walnuts, pecans, and more.
Causes of Cashew Allergy
1. Immune System Response
Cashew allergy is caused by the immune system’s hypersensitivity to certain proteins found in
cashews. When an individual with this allergy consumes cashews, their immune system releases

2. antibodies called Immunoglobulin E (IgE). These antibodies trigger the release of histamines,
causing the symptoms associated with allergic reactions.
2. Genetic Predisposition
Genetics plays a significant role in the development of cashew allergy. Individuals with a family
history of allergies, particularly food allergies, hay fever, asthma, or eczema, are at a higher risk
of developing a cashew allergy.
3. Cross-Reactivity
Cross-reactivity occurs when the proteins in cashews resemble those in other allergens, such as
pistachios or certain fruits. This can cause individuals who are allergic to one type of food to
react to another. Cross-reactivity between cashews and pistachios is particularly common due to
their similar protein structures.
Symptoms of Cashew Allergy
Source-Vinmec
The symptoms of a cashew allergy can vary widely in severity and can occur within minutes to a
few hours after ingestion.
1. Mild to Moderate Symptoms
 Skin Reactions: Hives, eczema, and itching.
 Gastrointestinal Issues: Nausea, vomiting, abdominal pain, and diarrhea.
 Respiratory Symptoms: Runny or stuffy nose, sneezing, coughing, and wheezing.
Severe Symptoms: Anaphylaxis

3. Anaphylaxis is a severe, life-threatening allergic reaction that requires immediate medical
attention. Symptoms of anaphylaxis include:
 Swelling: Particularly of the face, lips, tongue, and throat, leading to difficulty breathing.
 Cardiovascular Symptoms: Rapid or weak pulse, drop in blood pressure, and dizziness or
fainting.
 Respiratory Distress: Severe shortness of breath, wheezing, and difficulty breathing.
 Gastrointestinal Symptoms: Severe cramping and diarrhea.
Diagnosing Cashew Allergy
1. Medical History and Physical Examination
A thorough medical history and physical examination by an allergist are the first steps in
diagnosing a cashew allergy. The allergist will inquire about the patient’s symptoms, their onset,
and any potential triggers.
2. Skin Prick Test
In a skin prick test, a small amount of cashew extract is placed on the skin, usually on the forearm
or back. The skin is then lightly pricked with a needle. If a red, itchy bump develops at the site
within 15-20 minutes, it indicates an allergic reaction.
3. Blood Tests
Blood tests, such as the ImmunoCAP test, measure the level of IgE antibodies specific to cashew
proteins. Elevated IgE levels suggest an allergy.
4. Oral Food Challenge
An oral food challenge is considered the gold standard for diagnosing food allergies. Under
medical supervision, the patient consumes small, increasing amounts of cashew while being
closely monitored for any allergic reactions. This test is only conducted if the risk of a severe
reaction is deemed low.
Managing Cashew Allergy

4. Source-Verywell-Health
1. Avoidance
The primary strategy for managing a cashew allergy is strict avoidance of cashews and foods
containing cashews. This includes:
 Reading Labels: Carefully checking ingredient lists on packaged foods.
 Cross-Contamination: Being cautious about cross-contamination in kitchens and food
processing facilities.
 Dining Out: Informing restaurant staff about the allergy to avoid accidental exposure.
2. Emergency Action Plan
Individuals with a cashew allergy should have an emergency action plan in place. This plan
includes:
 Epinephrine Auto-Injector: Carrying an epinephrine auto-injector (e.g., EpiPen) at all times
and knowing how to use it.
 Antihistamines: Using antihistamines to manage mild symptoms.
 Medical Identification: Wearing a medical alert bracelet or necklace that identifies the
allergy.
 Emergency Contacts: Keeping a list of emergency contacts and instructions for seeking
immediate medical help.
3. Educating Others
Educating family, friends, coworkers, and caregivers about the cashew allergy is crucial for
preventing accidental exposure. Awareness and understanding among those around the allergic
individual can help ensure a safe environment.

5. Preventing Cashew Allergy in Children
Source-Healthline
1. Early Introduction
Recent studies suggest that early introduction of allergenic foods, including cashews, may reduce
the risk of developing food allergies. Parents should consult with their child’s pediatrician or an
allergist before introducing cashews, especially if the child has a family history of allergies.
2. Allergen Avoidance in Infancy
For infants at high risk of allergies, some experts recommend exclusive breastfeeding for the first
six months and delaying the introduction of highly allergenic foods. However, this approach
should be tailored to individual cases and discussed with a healthcare provider.
Living with Cashew Allergy
1. Dietary Adjustments
Living with a cashew allergy often requires making significant dietary adjustments. This includes
finding suitable alternatives and substitutes for cashew-containing products. Many recipes can be
adapted using seeds or other nuts, such as almonds or sunflower seeds, which are generally well-
tolerated by those with cashew allergies.
2. Support and Resources

6. Support groups and resources can provide valuable information and emotional support for
individuals with cashew allergies and their families. Organizations such as the Food Allergy
Research & Education (FARE) offer resources, advocacy, and support networks for those
affected by food allergies.
3. Travel Precautions
Traveling with a cashew allergy requires careful planning:
 Research: Investigate the cuisine and food labeling standards of the destination.
 Language Barriers: Learn how to communicate the allergy in the local language.
 Emergency Plan: Have a plan in place for accessing medical care in case of an allergic
reaction.
Advances in Allergy Research and Treatment
1. Immunotherapy
Research is ongoing into immunotherapy for food allergies, including cashew allergy. Oral
immunotherapy (OIT) involves administering gradually increasing amounts of the allergen to
build tolerance. While promising, this treatment is still in the experimental stages for cashew
allergy and should only be conducted under medical supervision.
2. Biologic Therapies
Biologic therapies, such as monoclonal antibodies targeting specific components of the immune
response, are being investigated as potential treatments for severe food allergies. These therapies
aim to reduce the severity of allergic reactions and improve the quality of life for individuals with
food allergies.
3. Allergen-Free Foods
Advances in food technology are leading to the development of allergen-free versions of common
foods. These products provide safe alternatives for individuals with cashew allergies, allowing
them to enjoy a wider variety of foods without risk.
Conclusion
A cashew allergy is a serious condition that requires vigilant management and lifestyle
adjustments. By understanding the causes, recognizing the symptoms, and implementing effective
management strategies, individuals with cashew allergies can lead safe and fulfilling lives.
Advances in research and treatment continue to offer hope for better management and potential
cures in the future. Through education, awareness, and careful planning, the risks associated with
cashew allergies can be significantly minimized, allowing those affected to navigate their daily
lives with confidence and security.

7. How to Tell If It’s a Food Allergy or Intolerance Causing Your
Symptoms?
Often some confusion in regard to food is caused whenever some health issues persist. A lot of
times your immune system reacts in different ways to the food you eat.
Read More