From personal experience and random polling of people I have come in control with, I have noticed that it is more likely that someone with peanut allergies is male and not female. Off the top of my head, I can only think one a single girl I have met with a peanut allergy, and she developed that one later in life due to a hyperactive immune system disease that caused her to become allergic to almost all foods she ate. However, I know Steven, Anthony, Jack, and the list goes on of males that are all allergic to peanuts and seem to have either had the allergy since birth or developed it in a moment that compromised their immune system. For example, Anthony claims to have become allergic to nuts after a dog licked his face as child. Steven has born with a deathly allergy to peanuts.
I began to research why this is, thinking that it may somehow be a gender-linked trait that is recessive X chromosome and therefore men, having a single X chromosome, would be more likely to inherit it and show the phenotype. Upon beginning to unveil the traits and data found in various articles, the trend seems to be more deeply connected to sociology than genetics. A study by Kotz et. al. that examined data of peanut allergy diagnoses collected in England between the years 2001 and 2005 found trends of socioeconomic and gender biases in the diagnosis processes. The rates and percentages of peanut allergies have been previously reported, but now the question is who with the allergy is getting medically identified. It turns out, males are more likely to be diagnosed than females. This is besides the numbers of people who actually have the allergy. The study also used census data correlated with the postal code of the patient to calculate the relative deprivaties in the patients life based on local unemployment, homeownership values, and others. This showed that those in a more well-to-do area were more likely to be diagnosed with a peanut allergy than those with less opportunity. This may be controlled by a hidden variable of medical access and people with higher incomes are more likely to access medical treatment for minor allergic reactions than people with lower incomes are.
Kotz, Daniel et al. 2011. Incidence, prevalence, and trends of general practitioner–recorded diagnosis of peanut allergy in England, 2001 to 2005
Journal of Allergy and Clinical Immunology, Volume 127, Issue 3, 623 - 630.
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