Allergies

The term allergy encompasses a wide range of conditions; it is not a disease in itself. The term allergy – medically termed hypersensitivity, signifies an exaggerated reaction to foreign substances.

Old Friends Hypothesis

The "old friends" hypothesis was proposed by Graham Rook in 2003 as an alternative to or refinement of the hygiene hypothesis, originally brought forward by Strachan in 1989 as an explanation for the rise in allergic disease.

Mustard Allergy

Epidemiology of Allergies

Food Allergy and Intolerance Research

Gold (Gold Sodium Thiosulfate) Allergy

Latex Allergy

Seasonal Allergy

Cow’s Milk Allergy Management

Diagnosis of Allergies

Allergies and Genetics

What is the Microbial Diversity Hypothesis?

Tree Nut Allergy

See more featured articles »

What are Pet Allergies?

Cockroach Allergy

What is Milk Allergy?

Cobalt Chloride Allergy

Long Term Effects of Taking Allergy Medications

Allergic Reaction to Skin Products

Research on Allergies

Pediatric Allergies

Chromium Allergy

How to Prevent Mold Allergies

Am I Allergic to Ragweed?

Fruit Allergies

Penicillin Allergy

What's Driving the Recent Rise in Food Allergies?

Can you Treat a Food Allergy by Altering the Gut Microbiome?

Perfume Allergy

Gluten Intolerance / Allergy

Wheat Allergy

Steps to Reduce Home Allergy

Causes of Allergies

Sesame Seed Allergy

Types of Eye Allergy

What is Food Protein-Induced Enterocolitis Syndrome (FPIES)?

Nickel Allergy

How Does Milk Allergy Differ from Lactose Intolerance?

Different Types of Allergies

Treatment and Prevention of Allergies

Breastfeeding and Allergies

Does Allergy Immunotherapy Work?

Are DIY Allergy Tests Reliable?

What is Anaphylaxis?

Meat Allergy After a Tick Bite

Allergies in Children

Oral Allergy Syndrome (OAS)

Can Food Allergies Be Genetic?

Meat Allergy

Sulfite Allergy

Treatment and Prevention of Allergies

What is Allergic Contact Dermatitis?

What is Dust Mite Allergy?

Allergies and the Hygiene Hypothesis

Milk Allergy

Balsam of Peru Allergy

What is Peanut Allergy?

What are Allergies?

Formaldehyde Allergy

Garlic Allergy

Common Allergens in the Workplace and How to Avoid Them

Type of Pollen Allergies

Soy Allergy

Allergic Reactions to Pharmaceutical Drugs

Lupin Allergy

What are Recombinant Allergens?

Celery Allergy

Allergy Patch Testing

Autism Spectrum Disorder & Allergies

Tartrazine Allergy

Wheat Allergy

What is Lactose Intolerance?

Types of Allergy Tests

Latest Allergies News and Research

$52 million study to investigate why some infants develop lasting lung infections

A Michigan Medicine-led research consortium has secured approval for up to $52 million in federal funding to launch a multicenter study examining why some young children recover fully from viral lower respiratory tract infections while others develop severe illness or lasting problems such as asthma.

20 Oct 2026

Why the same healthy diet may not work the same way for everyone

A review published in Nutrients proposes a seven-pillar precision nutrition framework that combines biological, behavioral, and environmental information to tailor dietary interventions throughout life. The authors identify potential benefits for cardiovascular, respiratory, blood, and sleep health, while emphasizing the need for further clinical trials to establish effective, accessible, and personalized nutritional strategies.

20 Oct 2026

Could this flowering plant help people lose body fat?

Lythrum salicaria extract supplementation led to body fat reduction in a clinical trial, suggesting a promising plant-based approach to weight management.

19 Oct 2026

Mediterranean-style diet during pregnancy lowers risk of infant colic and eczema

Infants born to mothers who ate a healthy, Mediterranean-style diet during pregnancy were at lower risk for colic and eczema, according to a new study by researchers at Harvard T.H. Chan School of Public Health, Boston Children's Hospital, and Harvard Pilgrim Health Care Institute.

12 Oct 2026

Think raw milk is better for you? Pediatricians have a warning

Pediatricians urge against raw milk, highlighting its link to foodborne illnesses and advocating for pasteurized alternatives to safeguard children's health.

12 Oct 2026

Rare dendritic cells may promote immune tolerance in metastatic cancer

This study was co-led by Steven Blum, MD. Gary Reynolds, MD, PhD, Samuel Klempner, MD, and Alexandra-Chloé Villani, PhD, jointly supervised the work at the Krantz Family Center for Cancer Research within the Mass General Brigham Cancer Institute and the Mass General Brigham Center for Immunology & Inflammatory Diseases (CIID).

8 Oct 2026

New long-acting HIV treatment offers hope for drug-resistant infections

A new long-acting HIV treatment could expand options for people who have trouble taking daily pills and whose virus is resistant to some commonly used HIV drugs, according to a new UC San Francisco study.

8 Oct 2026

Study finds age and body composition may explain gut bacteria differences between milk drinkers

A study of 265 adults suggests that gut bacteria differences between cow's milk and plant-based drink consumers may reflect individual characteristics rather than milk choice.

8 Oct 2026

Researchers find gene expression patterns linked to severe pediatric COVID-19

Researchers have identified patterns of gene activity associated with severe COVID-19 in children that are shared with other serious respiratory infections.

7 Oct 2026

Before the first bite: A missing gut protein may set the stage for peanut allergy

For most people, a peanut butter sandwich poses no threat. But for the roughly 1.6 million children in the United States with peanut allergy, exposure can trigger a life-threatening reaction.

6 Oct 2026

Common gene variant reduces effectiveness of pediatric asthma drug

Children with a variant in the SERPINE1 gene – which is found in 60% of the population – may be less responsive to mepolizumab, a drug used to treat asthma flares, according to a study published in the Journal of Allergy and Clinical Immunology.

1 Oct 2026

Screening approved medicines reveals potential treatments for preterm labor

Shajila Siricilla, PhD, Assistant Professor of Pediatrics, and Jennifer Herington, PhD, Associate Professor of Pediatrics, led a team that systematically screened 1,191 FDA-approved drugs and found that several candidates met criteria supporting further evaluation as potential treatments for preterm labor.

23 Sep 2026

A 30-day benznidazole regimen offers safer Chagas disease treatment option

A 30-day course of benznidazole taken once a day could offer people with chronic Trypanosoma cruzi infection a safer and more practical option than the current standard treatment, taken twice a day for 60 days.

22 Sep 2026

Sensory neurons remember past allergens to trigger future allergic reactions

Mass General Brigham researchers found that sensory neurons retain a 'memory' of allergens that may help explain why allergies develop over time.

22 Sep 2026

SARS-CoV-2 protein ORF8 drives macrophage infection and lung inflammation

In the sickest COVID-19 patients, the SARS-CoV-2 virus doesn't just cause severe damage by directly infecting airway cells.

18 Sep 2026

Can maternal diet prevent infant food allergy? A large trial puts eggs and peanuts to the test

A large Australian randomized trial of 2,137 pregnant women tested whether substantially increasing egg and peanut consumption during pregnancy and breastfeeding could prevent food allergy in infants with a strong family history of allergic disease. Higher maternal intake did not significantly reduce IgE-mediated egg or peanut allergy at 1 year, although the lower-than-expected allergy rate limited statistical power and the results could not exclude a clinically important benefit.

17 Sep 2026

Weill Cornell Medicine receives $17.4 million grant to shorten tuberculosis treatment

Researchers at Weill Cornell Medicine have received a $17.4 million, five-year grant from the National Institute of Allergy and Infectious Diseases to discover new approaches to shorten tuberculosis (TB) treatment, potentially making it easier for patients to complete therapy.

17 Sep 2026

Immunotherapy combined with BCG vaccine drastically lowers tuberculosis relapse risk

Tuberculosis (TB) remains one of the world's leading causes of death, and preventing post-treatment relapse continues to be a major worldwide health challenge.

17 Sep 2026

Silica and dust mites combine to worsen asthma inflammation

Inflammation associated with asthma and other allergic airway diseases can be significantly worsened by exposure to both house dust mite allergens and crystalline silica, according to a new study published in the journal Allergy.

15 Sep 2026

Tirzepatide vs semaglutide for asthma: the difference was smaller than researchers expected

In a US multicenter electronic health record study, researchers compared tirzepatide with semaglutide in adults with asthma and type 2 diabetes, matching 8,176 patients in each treatment group. Asthma exacerbation risk was similar between treatments, while tirzepatide was associated with a lower likelihood of receiving a short-acting beta-agonist prescription.

14 Sep 2026

Allergies

Overview

Feature Articles

Gold (Gold Sodium Thiosulfate) Allergy

Latex Allergy

Seasonal Allergy

Cow’s Milk Allergy Management

Diagnosis of Allergies

Allergies and Genetics

What is the Microbial Diversity Hypothesis?

Tree Nut Allergy

What are Pet Allergies?

Cockroach Allergy

What is Milk Allergy?

Cobalt Chloride Allergy

Long Term Effects of Taking Allergy Medications

Allergic Reaction to Skin Products

Research on Allergies

Pediatric Allergies

Chromium Allergy

How to Prevent Mold Allergies

Am I Allergic to Ragweed?

Fruit Allergies

Penicillin Allergy

What's Driving the Recent Rise in Food Allergies?

Can you Treat a Food Allergy by Altering the Gut Microbiome?

Perfume Allergy

Gluten Intolerance / Allergy

Wheat Allergy

Steps to Reduce Home Allergy

Causes of Allergies

Sesame Seed Allergy

Types of Eye Allergy

What is Food Protein-Induced Enterocolitis Syndrome (FPIES)?

Nickel Allergy

How Does Milk Allergy Differ from Lactose Intolerance?

Different Types of Allergies

Treatment and Prevention of Allergies

Breastfeeding and Allergies

Does Allergy Immunotherapy Work?

Are DIY Allergy Tests Reliable?

What is Anaphylaxis?

Meat Allergy After a Tick Bite

Allergies in Children

Oral Allergy Syndrome (OAS)

Can Food Allergies Be Genetic?

Meat Allergy

Sulfite Allergy

Treatment and Prevention of Allergies

What is Allergic Contact Dermatitis?

What is Dust Mite Allergy?

Allergies and the Hygiene Hypothesis

Milk Allergy

Balsam of Peru Allergy

What is Peanut Allergy?

What are Allergies?

Formaldehyde Allergy

Garlic Allergy

Common Allergens in the Workplace and How to Avoid Them

Type of Pollen Allergies

Soy Allergy

Allergic Reactions to Pharmaceutical Drugs

Lupin Allergy

What are Recombinant Allergens?

Celery Allergy

Allergy Patch Testing

Autism Spectrum Disorder & Allergies

Tartrazine Allergy

Wheat Allergy

What is Lactose Intolerance?

Types of Allergy Tests

Latest Allergies News and Research

Single-cell proteomics: Revealing proteome diversity from cellular heterogeneity to non-canonical biology

Improving healthcare sustainability through carbon data

Managing vibration in IVF laboratories

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