Wednesday, April 22 2026

How Does Pollen Provoke Allergic Reactions?

How do pollen particles provoke allergic reactions? A study in The Journal of Experimental Medicine puts some of the blame on bioactive molecules that are released from pollen. These molecules bind to immune cells and cause them to launch a typical allergy-promoting immune response. Pollen from plants exposed to air pollutants produce more of these allergy-provoking compounds than do pollen from unpolluted areas, possibly explaining why allergies are more prevalent in places with high levels of car exhaust emissions.

Pro-Infammatory Molecules

Traidl-Hoffmann and colleagues showed that extracts from birch pollen and other common allergens block the production of a soluble protein by immune cells that normally inhibits allergic reactions.

They went on to identify the compound in the pollen extracts that caused the inhibitory response and showed that it was similar to certain pro-inflammatory molecules produced in the body in response to injury or infection.

The authors now plan to assess whether cells from allergy-prone people are more sensitive to the effects of the pollen-derived compound than those from non-allergic individuals. A better understanding of these molecules and how they work may eventually lead to new approaches to treating allergies.

Thursday, April 9 2026

Choosing Less Allergenic Plants for Your Yard

When people with seasonal allergies are looking for relief, they usually think about what's in their medicine cabinet — not their backyard. A new workgroup report published in The Journal of Allergy and Clinical Immunology: In Practice called, "Landscape plant selection criteria for the allergic patient," guides both patients and doctors on how to reduce allergen exposures around their home and, in turn, reduce their symptoms.

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Friday, February 13 2026

Early-Life Factors That Raise Risk of Food Allergies

A new study from McMaster University involving 2.8 million children around the world has revealed the most important early-life factors that influence whether a child becomes allergic to food. The study, one of the largest of its kind to examine food allergies, furthers our understanding of how  […]

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Sunday, February 1 2026

What Is an Anaphylactic Reaction?

An extreme, life-threatening allergic reaction -- usually to food, medications or insect bites -- anaphylactic reaction can result in breathing problems, dizziness, hives, a sudden drop in blood pressure, an asthma attack, or unconsciousness. It can be fatal. It must be treated promptly. An  […]

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Saturday, January 10 2026

Action Plan Can Help Parents Prevent Peanut Allergy in Children

Feeding babies peanut-containing foods as early as possible can help prevent peanut allergy, but a children's hospital study found that parents need more support to get it right. Interviews with parents revealed widespread confusion about the purpose, risks, and timing of early peanut introduction guidelines.

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Friday, January 2 2026

Early Cat Exposure May Increase Children's Risk of Eczema

Children who are exposed to cats soon after birth may have an increased risk of developing eczema, according to a study presented at the American Thoracic Society International Conference. Being exposed to two or more dogs at home suggested a slightly protective, but not significant, effect on children's risk of developing eczema, said lead researcher Esmeralda Morales, M.D., Pediatric Pulmonary Fellow at the University of Arizona in Tucson.

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Monday, December 22 2025

Food Safety Strategies Can Save Lives

By adhering to food safety strategies, people with food allergy and those cooking for food-allergic individuals can achieve a safe, enjoyable dining experience.

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Monday, December 1 2025

Air Pollution Exposure Linked to Increased Severity of Rhinitis

Rhinitis is a very frequent disease affecting between 20 percent and 50 percent of the global population depending on the countries and definitions used. Often considered as a trivial disease, rhinitis does actually have an important impact on quality of life; however, very little is known about air pollution as risk factor for rhinitis and its severity in adults.

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