Introduction
Allergies are a serious and growing health concern worldwide. The World Allergy Organization’s White Book on Allergy estimates that 30–40% of the global population is now affected by one or more allergic conditions; its 2014 call to action puts the figures at roughly 300 million people with asthma, 200–250 million with food allergy and 400 million with allergic rhinitis [1]. These conditions are not trivial — they can progress from mild skin irritation to asthma and life-threatening respiratory distress [2].
Women are disproportionately affected by certain types of allergies, particularly contact and respiratory allergies related to household activities [3]. This is due both to hormonal factors and to greater exposure through cooking, cleaning and personal care.
Those hormonal factors are part of a wider pattern. Immune response, inflammatory signalling and drug metabolism all differ measurably between men and women, and the difference is physiological rather than behavioural — we set out what the evidence documents in physiological differences between men and women.
This review examines the most common allergies affecting women, their symptoms, and the scientific basis for their increasing prevalence.
1. Tomato Allergy: The Hidden Kitchen Hazard
A. The Condition
Tomato allergy is a documented clinical entity [4]. When some women peel or cut tomatoes, they may experience:
- Redness on the hands (contact urticaria)
- Itching or irritation of the nose
- Throat discomfort
- Facial redness
B. The Mechanism
Tomatoes contain lipid transfer proteins — potent allergens that are highly resistant to heat and to digestion [5]. These proteins can cause both contact reactions, when tomato juice touches the skin, and oral allergy syndrome when tomatoes are eaten.
C. Pesticide Residues as a Confounding Factor
Some women may be reacting to pesticide residues on unwashed vegetables rather than to the tomato itself. Pesticide exposure is associated with immunological changes and hypersensitivity [6], and organophosphates in particular have documented immunotoxic effects [7].
A note on precision: the figure often repeated — that vegetables are sprayed “17 to 20 times with 17 different pesticides” — is an approximation. Application rates vary considerably by crop, by region and by farming practice.
The practical response is simple. Washing produce thoroughly under running water measurably reduces pesticide residues [8].
2. Wheat Flour Allergy: Baker’s Asthma and Beyond
A. The Condition
Inhaling wheat flour dust while kneading, sifting or baking can cause:
- Runny nose (rhinitis)
- Red, irritated eyes (conjunctivitis)
- Facial redness
- Breathing difficulty
- Itching in the ears, from flour dust entering the ear canal
B. The Mechanism
Baker’s asthma is a well-documented occupational allergy caused by inhaling wheat flour dust [9]. The main allergens are wheat proteins that become airborne during handling. Symptoms include rhinitis, conjunctivitis and asthma — wheezing, chest tightness, shortness of breath [10].
Isolated itching of the external ear canal has its own small clinical literature, and is worth mentioning because it is so often dismissed [11].
C. Why Women Are Particularly Affected
Women are disproportionately exposed to flour dust through home baking and cooking [3]. Recognising these symptoms early matters.
3. Cleaning Product Allergies
A. The Condition
Household cleaning products — bleach, detergents, disinfectants — are documented causes of:
- Eczema between the fingers (contact dermatitis)
- Runny nose
- Frontal headache
- Red, irritated eyes
- Swelling
- Insomnia
- Wheezing or whistling on breathing
B. The Mechanism
These products contain irritants and allergens that cause contact dermatitis through direct skin exposure [12], and respiratory irritation through inhalation of volatile compounds.
C. The Evidence
A systematic review and meta-analysis in Occupational and Environmental Medicine examined cleaning products and respiratory outcomes in both occupational and domestic settings, and found consistent associations with asthma and respiratory symptoms [13]. A European Academy of Allergy and Clinical Immunology position paper reached similar conclusions [14].
4. Perfume and Personal Care Products
A. The Condition
Fragrance allergy is common and well documented [15]. Exposure to strong perfumes — on oneself or on others — can produce sneezing, runny nose, breathing difficulty and eye irritation.
B. The Mechanism
Fragrances contain volatile organic compounds that can irritate nasal and eye mucosa directly [16], and can also cause allergic contact dermatitis, a delayed hypersensitivity reaction [15].
C. Nail Polish Remover, Lotions and Cosmetics
Personal care products are among the most common causes of contact dermatitis and allergic reaction [17].
5. Modern Agricultural Practices
A. The Argument
The problem may not be casein or gluten themselves — humans have eaten milk and wheat for centuries. The argument is that modern production methods are the real variable: genetically modified feed for livestock, pesticides on wheat, and industrial farming generally.
B. What the Evidence Supports
What is established:
- The prevalence of celiac disease has risen several-fold over recent decades, and this cannot be explained by genetics alone [18]
- Genetically modified feed — corn, soy — is widely used in livestock farming
What is proposed but not established:
- Glyphosate residues on wheat have been proposed as a contributing factor to gluten intolerance [19]. This remains a hypothesis, and a contested one. It should be read as a proposal, not a finding.
One correction of fact: GMO wheat is not commercially available. Wheat has undergone extensive hybridisation and selective breeding, but no genetically modified wheat is sold commercially anywhere in the world. GMO feed for livestock is a separate matter, and that is widely used.
6. The Atopic March: Why Allergies Are Dangerous
A. The Progression
Allergies are not trivial annoyances. They can progress along what immunologists call the atopic march [2]:
- Eczema in infancy
- Food allergies in childhood
- Allergic rhinitis
- Asthma — the most serious manifestation
B. The Evidence
The atopic march is well documented. Early allergic sensitisation significantly raises the risk of developing asthma [2], and allergic rhinitis is itself a recognised risk factor for asthma [20].
Conclusion
Allergies are serious. They can progress to asthma and to life-threatening conditions [2].
Women are disproportionately affected by contact and respiratory allergies tied to household activity [3].
The common allergens are tomatoes and their lipid transfer proteins [4][5], wheat flour dust [9][10], cleaning products [12][13][14], and fragrances and personal care products [15][16][17].
The rise is real — 30 to 40% of the world’s population is affected [1].
Modern agricultural practice may contribute, but the specific glyphosate hypothesis remains unproven, and GMO wheat does not exist commercially [18][19].
Recognition is what matters. Knowing the early signs is how the progression to asthma is interrupted.
This article is part of our complete guide to Chronic Disease Prevention — the lifestyle strategies and daily habits that lower long-term risk.
Frequently Asked Questions
Can you really be allergic to tomatoes?
Yes. Tomato allergy is a documented clinical entity. Tomatoes contain lipid transfer proteins that are potent allergens, causing contact urticaria on the skin and oral allergy syndrome when eaten [4][5].
What is baker’s asthma?
An occupational allergy caused by inhaling wheat flour dust. Symptoms include rhinitis, conjunctivitis and asthma. It is well documented in bakers and in anyone who regularly handles flour [9][10].
Are cleaning products really dangerous?
Yes. A systematic review and meta-analysis found consistent associations between cleaning product exposure and asthma and respiratory symptoms, in both occupational and domestic settings [13][14]. They are also established causes of contact dermatitis [12].
Why are women affected more than men?
Two reasons that compound each other. Exposure is higher — cooking, cleaning and personal care products are handled disproportionately by women [3]. And the immune response itself differs: sex hormones measurably influence immediate-type hypersensitivity reactions [3]. The physiological side is set out in physiological differences between men and women.
Is the problem with wheat the gluten or the pesticides?
This is genuinely unsettled. What is established is that celiac disease has become substantially more common, and that genetics alone does not explain it [18]. The glyphosate hypothesis has been proposed [19] but is not accepted in the gastroenterology literature. And GMO wheat is not commercially available — that part is a common misconception.
Can allergies progress to asthma?
Yes. The atopic march describes the progression from eczema and food allergy in childhood to allergic rhinitis and asthma [2][20]. Early recognition and management is how that progression is interrupted.
Scientific Sources & References
Every source below was checked against PubMed and the CrossRef DOI registry. Each link resolves to the paper cited.
- Pawankar, R. (2014). “Allergic diseases and asthma: a global public health concern and a call to action.” World Allergy Organization Journal, 7(1), 12. Summarises the WAO White Book on Allergy: Update 2013 (Pawankar, Canonica, Holgate & Lockey, eds.). PubMed 24940476
- Spergel, J. M., & Paller, A. S. (2003). “Atopic dermatitis and the atopic march.” Journal of Allergy and Clinical Immunology, 112(6 Suppl), S118–S127. doi:10.1016/j.jaci.2003.09.033
- Chen, W., Mempel, M., Schober, W., Behrendt, H., & Ring, J. (2008). “Gender difference, sex hormones, and immediate type hypersensitivity reactions.” Allergy, 63(11), 1418–1427. doi:10.1111/j.1398-9995.2008.01880.x
- Zacharisen, M. C., Elms, N. P., & Kurup, V. P. (2002). “Severe tomato allergy (Lycopersicon esculentum).” Allergy and Asthma Proceedings, 23(2), 149–152. PubMed 12001794
- Asero, R., Mistrello, G., Roncarolo, D., et al. (2000). “Lipid transfer protein: a pan-allergen in plant-derived foods that is highly resistant to pepsin digestion.” International Archives of Allergy and Immunology, 122(1), 20–32. doi:10.1159/000024355
- Voccia, I., Blakley, B., Brousseau, P., & Fournier, M. (1999). “Immunotoxicity of pesticides: a review.” Toxicology and Industrial Health, 15(1–2), 119–132. doi:10.1177/074823379901500110
- Galloway, T., & Handy, R. (2003). “Immunotoxicity of organophosphorous pesticides.” Ecotoxicology, 12(1–4), 345–363. doi:10.1023/a:1022579416322
- Li, X., Liu, C., Liu, F., et al. (2023). “Accelerated removal of five pesticide residues in three vegetables with ozone microbubbles.” Food Chemistry, 403, 134386. doi:10.1016/j.foodchem.2022.134386
- Baur, X., & Posch, A. (1998). “Characterized allergens causing bakers’ asthma.” Allergy, 53(6), 562–566. doi:10.1111/j.1398-9995.1998.tb03931.x
- Quirce, S., & Diaz-Perales, A. (2013). “Diagnosis and management of grain-induced asthma.” Allergy, Asthma & Immunology Research, 5(6), 348–356. doi:10.4168/aair.2013.5.6.348
- Acar, B., Simsek, G. G., Oguztuzun, S., et al. (2011). “Isolated itching of external auditory canal: clinicopathological study.” The Journal of Laryngology and Otology, 125(3), 227–230. doi:10.1017/S0022215110002161
- Magnano, M., Silvani, S., Vincenzi, C., Nino, M., & Tosti, A. (2009). “Contact allergens and irritants in household washing and cleaning products.” Contact Dermatitis, 61(6), 337–341. doi:10.1111/j.1600-0536.2009.01647.x
- Archangelidi, O., Sathiyajit, S., Consonni, D., Jarvis, D., & De Matteis, S. (2021). “Cleaning products and respiratory health outcomes in occupational and domestic settings: a systematic review and meta-analysis.” Occupational and Environmental Medicine, 78(8), 604–617. doi:10.1136/oemed-2020-106776
- Siracusa, A., De Blay, F., Folletti, I., et al. (2013). “Asthma and exposure to cleaning products — a European Academy of Allergy and Clinical Immunology task force consensus statement.” Allergy, 68(12), 1532–1545. doi:10.1111/all.12279
- Johansen, J. D. (2003). “Fragrance contact allergy: a clinical review.” American Journal of Clinical Dermatology, 4(11), 789–798. doi:10.2165/00128071-200304110-00006
- Elberling, J., Linneberg, A., Dirksen, A., et al. (2005). “Mucosal symptoms elicited by fragrance products in a population-based sample in relation to atopy and bronchial hyper-reactivity.” Clinical & Experimental Allergy, 35(1), 75–81. doi:10.1111/j.1365-2222.2005.02138.x
- de Groot, A. C., & Frosch, P. J. (1997). “Adverse reactions to fragrances. A clinical review.” Contact Dermatitis, 36(2), 57–86. doi:10.1111/j.1600-0536.1997.tb00418.x
- Lebwohl, B., Ludvigsson, J. F., & Green, P. H. R. (2015). “Celiac disease and non-celiac gluten sensitivity.” BMJ, 351, h4347. doi:10.1136/bmj.h4347
- Samsel, A., & Seneff, S. (2013). “Glyphosate, pathways to modern diseases II: Celiac sprue and gluten intolerance.” Interdisciplinary Toxicology, 6(4), 159–184. doi:10.2478/intox-2013-0026 — cited as the source of the glyphosate hypothesis. The authors are not toxicologists and the paper has been widely criticised; it is a proposal, not evidence.
- Bousquet, J., Khaltaev, N., Cruz, A. A., et al. (2008). “Allergic Rhinitis and its Impact on Asthma (ARIA) 2008 update.” Allergy, 63(Suppl 86), 8–160. doi:10.1111/j.1398-9995.2007.01620.x
