Hay fever, also called allergic rhinitis, is an immune system reaction to pollen from trees, grasses, and weeds. These pollens are normally harmless, but in people with hay fever, the immune system mistakenly perceives them as a threat. When pollen is inhaled, the body produces immunoglobulin E (IgE) and the immune system activates mast cells, leading to inflammation and the typical symptoms of sneezing, itching, and a runny nose.

The main triggers are pollen from trees such as birch, alder, and hazel, grass pollen, which is common in spring and summer, and weed pollen such as ragweed. Weather conditions also play a role; on windy days, pollen spreads further, increasing exposure. Mold spores and other airborne allergens can also contribute to symptoms. These allergens irritate the mucous membranes of the nose, eyes, and throat, causing the immune system to react with a strong histamine and inflammatory response.

Hay fever symptoms vary from person to person. Common symptoms include sneezing, a runny or stuffy nose, itchy and watery eyes, irritation of the throat and palate, and fatigue due to poor sleep and persistent inflammation. Some people even experience respiratory or asthma-like symptoms when sensitive. Not everyone experiences these symptoms with the same severity; some have only mild, manageable symptoms, while others develop severe symptoms that impact daily life. The severity depends on the sensitivity of the immune system, the amount of pollen exposure, and genetic predisposition.

Hay fever is caused by an overreaction of the immune system. Upon contact with pollen, the body produces IgE antibodies that attach to mast cells, releasing substances such as histamine and triggering the inflammatory response. Some people have an atopic predisposition, making them more prone to allergic reactions. Genetics and previous immune responses play a role in this.

Natural support can play a role in reducing inflammatory responses and supporting the immune system. Black seed, or Nigella sativa, contains bioactive compounds like thymoquinone, known for their anti-inflammatory and immunomodulatory properties. Research shows that black seed extracts can promote the regulation of immune cells and cytokines and reduce pro-allergic signals. In studies, nigella extracts significantly reduced symptoms of allergic rhinitis, such as sneezing and inflammation, compared to untreated models.

Turmeric, and specifically its active ingredient curcumin, has also been studied for its anti-inflammatory and immunoregulatory effects. Clinical studies suggest that curcumin can help improve airflow, reduce nasal congestion and sneezing, and modulate the immune system through cytokine production. While the evidence is promising, these remedies should always be used as a supplement to a healthy lifestyle and not as a replacement for medical treatment.

Why do some people experience hay fever more severely than others? This may be related to a genetic predisposition to allergic reactions, respiratory sensitivity or existing asthma, increased pollen exposure due to location and season, and the status of the immune system. In addition, overall health, nutrition, and stress play a role, as the immune system is closely linked to gut flora and inflammation levels.

Hay fever can therefore arise from the immune system overreacting to pollen and other allergens, leading to inflammatory responses and symptoms such as sneezing, itching, and congestion. The severity of symptoms varies from person to person. Natural supplements such as black seed and turmeric can support modulating immune and inflammatory responses. This should always be considered part of a broader health approach and not a replacement for a medical diagnosis or treatment.

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