As the weather warms, sneezing and other allergy symptoms are becoming increasingly common. But it’s not just children who are affected; a growing number of adults are experiencing allergies for the first time later in life. What explains this delayed onset, and can anything be done to manage it?
The notion that allergies are a childhood affliction is a misconception. Allergies can emerge at any point in life, often triggered by changes in lifestyle or environment. A move to a new location, the introduction of a pet, or even taking up a new hobby like gardening can all contribute to the development of allergies. The prevalence of allergies has increased significantly in recent decades, with a reported rise of around 30% over the past twenty years in France, often attributed to a combination of pollutants and allergens.
Allergies Can Appear Throughout Life
“There is no age limit for developing allergies,” confirms Dr. Gérald Kierzek, an emergency physician and medical director at Doctissimo. “Allergies frequently appear in childhood, often as food allergies like those to milk or eggs. Still, they can as well manifest later – during adolescence, adulthood (to pollens, dust mites, or medications), and even after the age of 50 or 60, following repeated exposure to an allergen or a change in environment.” He notes that allergies to medications and insect stings are particularly common in older adults.
Changes in the gut microbiome, linked to aging, can also weaken the immune system and increase susceptibility to allergies, according to some studies. Illnesses like the flu or COVID-19 can compromise the immune system, potentially raising the risk of developing allergic reactions.
Understanding the Development of Allergic Sensitivities
If you live near cypress, ragweed, or birch trees, it’s highly likely these trees are contributing to your allergy symptoms, as their pollen is among the most allergenic in France. However, Dr. Kierzek emphasizes that allergies are multifactorial, resulting from a complex interplay between genetic predisposition and environmental factors. Family history plays a significant role – having one or two allergic parents increases a child’s risk by three to five times. Environmental factors such as air pollution, excessive hygiene limiting exposure to microbes, modern diets, and stress can also contribute to allergy development.
Biologically, an allergy is an abnormal immune response involving IgE antibodies. Initial exposure to an allergen doesn’t typically cause symptoms, but sensitizes the body. Subsequent exposure triggers the release of histamine and other chemicals from mast cells, leading to allergic reactions.
Managing and Reducing Allergy Sensitivity
While there’s no single cure for allergies, symptoms can often be reduced through various approaches. Immunotherapy, also known as desensitization, involves gradually exposing the body to the allergen and can be effective in 70 to 80% of cases, particularly for pollen, dust mite, and insect venom allergies, after three to five years of treatment. Avoiding allergens when possible, along with symptomatic treatments like antihistamines and topical corticosteroids, can also help control symptoms.
Research is ongoing into potential immunomodulatory therapies, such as probiotics and certain micronutrients like vitamin D. Some food allergies, like those to milk or eggs, often resolve spontaneously before the age of 3 to 6 years. Puberty or a change in environment can also sometimes lessen symptoms.
Dr. Kierzek recommends consulting an allergologist for a comprehensive evaluation, including skin tests, to develop a personalized management strategy.
Disclaimer: This article provides informational content and should not be considered medical advice. Always consult with a qualified healthcare professional for diagnosis and treatment of any health condition.
As research continues to unravel the complexities of allergies, staying informed and proactive about your health is crucial. What steps will you take to manage your allergy symptoms this season? Share your thoughts in the comments below.
