Hay Fever News and Research

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Hay fever (pollen allergy) is one of the most common kinds of allergies. About 35 million Americans suffer from hay fever. Pollen is made by trees, grasses, and weeds. During the spring, summer, and fall some plants release pollen into the air you breathe. Your symptoms might be different at different times of the year. It all depends on the kinds of plants that grow where you live and what allergies you have.

Study maps how birth order tracks disease risk across 10 million siblings

Researchers analyzing claims from more than 10 million siblings linked first-born status to higher odds of several neurodevelopmental and allergic diagnoses, while second-born status tracked with substance abuse and gastrointestinal conditions. The observational study identified 150 significant birth-order associations across the phenome, but claims data and residual confounding prevent causal conclusions.

4 Aug 2026

Common allergy medications offer no real relief for eczema patients

It's typical for someone looking for relief from dry, itchy, red and irritated skin – also known as eczema or atopic dermatitis – to turn to common allergy medications called antihistamines.

30 Jul 2026

Allergies show a small but significant link to later cancer risk

A systematic review and meta-analysis of 28 cohort-based studies found a weak but statistically significant association between allergic diseases and later cancer incidence. The signal was strongest in the Western Pacific region and among people with asthma, but high heterogeneity and limited subgroup evidence mean the findings require caution.

5 Jul 2026

Impact of climate change on pollen levels is already being felt - Nutritionist shares simple kitchen remedies to ease symptoms

Hay fever sufferers across the UK are facing longer and more intense allergy seasons, as new research reveals the impact of climate change on pollen levels is already being felt.

26 Jun 2026

Study finds indoor cats do not trigger child asthma flares

Asthma is the most common chronic disease and one of the main causes of hospitalization among children. The Global Asthma Network has estimated that its global prevalence is 9.1% for children and 11.0% for adolescents, but this percentage varies greatly between countries, regions, and environments.

10 Jun 2026

Severe asthma patients often face multiple overlooked health conditions

Most people living with severe asthma are also battling other health conditions that go under the radar, a major new study has found.

20 May 2026

Japan's famous matcha could reduce sneezing in people with nasal allergies

There's now another reason to love Japan's famous matcha: a study in mice suggests that the green tea powder could reduce the need to sneeze in people with nasal allergies.

11 Mar 2026

DTU researchers discover gut bacteria link to reduced allergy and asthma risk

Researchers from DTU have patented an invention that uses naturally produced substances from gut bacteria of the bifidobacteria type to reduce the risk of allergies and asthma.

14 Jan 2026

Allergic conditions linked to higher risk of complications after surgery

Two new studies being presented at the 2025 Annual Scientific Meeting of the American College of Allergy, Asthma and Immunology (ACAAI) show that people with allergic conditions - including eczema, asthma, and hay fever - may face more problems after certain types of surgery.

6 Nov 2025

UC researcher wins $300,000 grant to investigate the underlying causes of eosinophilic esophagitis

Patients with eosinophilic esophagitis (EoE) often describe the condition as painful, disruptive and frightening.

11 Sep 2025

Azelastine nasal spray significantly reduces SARS-CoV-2 infections in clinical trial

The trial, led by Professor Robert Bals, Director of the Department of Internal Medicine V at Saarland University Medical Center and Professor of Internal Medicine at Saarland University, divided the 450 participants into two groups.

2 Sep 2025

COVID-19 increases risk of asthma and sinusitis while vaccination offers protection

People who have had COVID-19 are at increased risk of developing certain inflammatory diseases of the airways, such as asthma, hay fever and chronic sinusitis.

14 Aug 2025

Monoclonal antibody delivered through the nose blocks hay fever in mice

Approximately 40% of the European population are allergic to pollen, and their symptoms cause an estimated loss of 100 million school- and workdays every year.

11 Jul 2025

Study finds key genetic differences between male and female placentas

The genes of male and female placentas have marked differences in how they are expressed, according to a study by researchers at the National Institutes of Health (NIH) and other institutions.

1 May 2025

Increased allergy symptoms tied to changing climate patterns

A review published in The Laryngoscope indicates that climate change's effects on pollen seasons and concentrations are contributing to increasing rates of allergic rhinitis, or hay fever.

9 Apr 2025

How to manage allergies in children

When a child's sniffles and sneezing won't go away for weeks, the cause might be allergies.

13 Mar 2025

Study explores how nanoplastics could affect child's immune system during pregnancy

Allergies and asthma are widespread diseases that could arise during embryonal development in the womb.

6 Feb 2025

Safe storage crucial to prevent child drug poisoning

New data shows that the number of children suffering a seizure after swallowing medications or illegal substances has doubled between 2009 and 2023 in the US. The findings were presented today (Wednesday) at the European Emergency Medicine Congress.

16 Oct 2024

Study links air pollution and limited green spaces to higher respiratory hospitalization risk

Long-term exposure to air pollution and a lack of access to green spaces increases the risk of hospitalization for respiratory conditions, according to a study presented at the European Respiratory Society (ERS) Congress in Vienna, Austria.

9 Sep 2024

Longitudinal antibody changes key to identifying peanut allergy resolution in kids

Australian researchers have discovered how changes in antibody levels over time can predict which children are likely to outgrow their peanut allergy.

9 May 2024