To avoid allergic reactions, the keyword for it is anti-inflammation. Anti-inflammatory effects could be accomplished by simply taking medicines. Although allergies are controllable with antihistamines, steroidal medicines and other modern medicines. Suppose you are not going to take the medicines for a long period, change in diet is a only option you may deal with allergies. In that case, it is highly recommended you take nature-oriented medicines and foods. To help to reduce allergy-related inflammation, there are many foods you can get from nearby groceries.

Omega-3
Do you like fish? If grilled, the smells and dust float all around the house, so it’s not easier to consume than veggies and meat. But it’s worth it because of omega-3 in fish oil. Omega-3 is well known anti-oxidant to reduce inflammatory works in the human body. Suppressing inflammation is directly linked to a lower allergic reactions, so large numbers of epidemiological and observational studies investigating the effect of fish intake or omega-3 fatty acid supplementation on asthmatic and allergic outcomes have been conducted (2). The fatty chain nutrients help to reduce allergic reactions almost everywhere in the body.
Omega-3 fatty acid, rich in salmon, mackerel, and sardines, has a powerful anti-inflammatory effect. EPA and DHA in fish oil are able to inhibit many aspects of inflammation including production of prostaglandins and leukotrienes, and cytokines. Mechanisms of anti-inflammatory actions include altered cell membrane phospholipid fatty acid composition, disruption of lipid rafts, inhibition of activation of the pro‐inflammatory transcription factor nuclear factor kappa B so, reducing expression of inflammatory genes, activation of the anti‐inflammatory transcription factor and binding to the G protein-coupled receptor (1). These incorporating mechanisms are interlinked together and give us the synergic effect of anti-inflammation.
For adults, a total intake of EPA plus DHA greater than 2 g a day is required for beneficial anti-inflammatory actions. If you are not a big fan of fish cousins, try omega-3 supplements to take up high doses of fatty acids. Also, animal models studies show us the benefit of omega-3 in many diseases like rheumatoid arthritis (RA), inflammatory bowel disease (IBD), and asthma. Cell-protective effects from inflammations suggest a relationship between fish oil diets and allergic diseases.

2) Jun Miyata 1, Makoto Arita 2. Role of omega-3 fatty acids and their metabolites in asthma and allergic diseases. Allergol Int. 2015 Jan;64(1):27-34. doi: 10.1016/j.alit.2014.08.003. Epub 2014 Oct 27.
1) Philip C. Calder. Omega‐3 polyunsaturated fatty acids and inflammatory processes: nutrition or pharmacology? Br J Clin Pharmacol. 2013 Mar; 75(3): 645–662.

Honey
The therapeutic purpose of honey digestion is due to its anti-microbial, anti-inflammatory, anti-cancer, and wound healing. Many researchers have reported that Honey could manage allergic diseases like asthma and atopic dermatitis. Honey is ready to relieve symptoms and regulate inflammatory cells in many allergic reactions. It can significantly inhibit mast cell degranulation, and anti-allergen IgE levels (3). Honey improves all the histopathological parameters of allergic asthma.
Topical use of Honey is a traditional way to treat allergic site. Published in 2017, Immunity, inflammation, and disease journal shows results of Manuka Honey administrating on the skin for the treatment of optic dermatitis (4). Adult volunteers with AD were applied manuka honey on disease site over 7 days. The post-manuka honey group improved compared to the control group, and Honey actually downregulated inflammatory parameters. In addition, mast cell degranulation was significantly inhibited following treatment with honey.
Not only do these anti-inflammatory works, but prebiotics in natural Honey contribute to decreasing allergic reactions. Types of honey have bioactive antibacterial properties. Because Honey contains lots of non-digestible carbohydrates in the form of oligosaccharides, powerful prebiotics. Oligosaccharides change the composition and function of the gut microbiota into gut-favorable. Consequently, healthy gut conditions due to good microbiota improved the immune system to fight against and reduce infection-causing bacteria in the gut, including Salmonella, Escherichia coli, and Clostridiodes difficile, while simultaneously stimulating the growth of potentially beneficial species, such as Lactobacillus and Bifidobacteria (5).

3) Poi Yi Aw Yong, Fahmida Islam, Hanis Hazeera Harith, Daud Ahmad Israf, Ji Wei Tan, Chau Ling Tham. The Potential use of Honey as a Remedy for Allergic Diseases: A Mini Review. Front. Pharmacol., 26 January 2021 Sec. Ethnopharmacology Volume 11 – 2020.
4) Abdullah A. Alangari, Keith Morris, Bashir A. Lwaleed, Laurie Lau, Ken Jones, Rose Cooper, Rowena Jenkins. Honey is potentially effective in the treatment of atopic dermatitis: Clinical and mechanistic studies. Immunity, inflammation, and disease, Volume5, Issue2, June 2017, Pages 190-199.
5) Kathleen R. Schell1 Kenya E. Fernandes2 Erin Shanahan2 Isabella Wilson1 Shona E. Blair3 Dee A. Carter2 Nural N. Cokcetin1*. The Potential of Honey as a Prebiotic Food to Re-engineer the Gut Microbiome Toward a Healthy State. Front. Nutr., 28 July 2022

Pineapples
Here is a delicious fruit to calm down your body, pineapples. Full of vitamin C, a representative antioxidant, also known as ascorbic acid, may help with allergies. Vitamin C itself acts as a powerful antioxidant as an antihistamine drug. It is a useful nutrient source for treating diseases associated with oxidative stress, inflammation, and immune dysregulation related to allergies. Several studies indicate that vitamin C in allergic disorders like asthma, chronic obstructive pulmonary disease (COPD), lung infection, and lung cancer (6). Vitamin C showed a relaxant effect on the respiratory tract via many mechanisms.
Pineapple is a famous fruit for its component, the enzyme bromelain. Bromelain, a mixture of cysteine proteases from pineapple, inhibits allergic diseases. This remarkable enzyme is a delicate weapon against cellular inflammation to reduce swelling and irritation brought by allergens. Atopic conditions caused by allergens can be administrated with this bromelain. Through animal study, we actually know that lung, bronchoalveolar lavage, spleen, and lymph nodes can also protected by bromelain from inflammations (7).

6) Mohammad Hossein Eshaghi Ghalibaf,1,2 Farzaneh Kianian,2 Sima Beigoli,1 Sepideh Behrouz,1 Narges Marefati,3 Marzie Boskabady,4,5 and Mohammad Hossein Boskabadycorresponding author1,6. The effects of vitamin C on respiratory, allergic and immunological diseases: an experimental and clinical-based review. Inflammopharmacology. 2023; 31(2): 653–672.
7) Eric R. Seco. Bromelain Inhibits Allergic Sensitization and Murine Asthma via Modulation of Dendritic Cells. Evidence-Based Medicinal Plants for Modern Chronic Diseases, Volume 2013 | Article ID 702196.

These foods and diets could be helpful, but there is no such magic to get rid of allergies. To reduce allergy symptoms and support overall immune health, dietary choices are so crucial. Keep in mind that allergies vary from individuals, so some information may not be proper to anyone else. It’s important to consult your doctor or pharmacist if you are in a disease condition or taking medications.