Hair in Food

Woman with long hair, serving food
Q: We all love beautiful hair when it's on someone's head, but why do we despise it so much when there's hair in our food? Why is hair in our food such a big issue? Why do some people almost gag when they find hair in their food? Is there an explanation for this?
A: The aversion to finding hair in our food can be attributed to a combination of biological, psychological, and societal and cultural factors. While we may find hair on someone's head attractive, discovering hair in our food immediately triggers a negative response. Our negative reaction to finding hair in our food can be explained in multiple ways.
From a biological perspective, our aversion to foreign objects in our food is rooted in the evolutionary history of humans. Throughout evolution, humans developed a natural instinct to avoid things that could potentially be harmful or infectious. Finding hair in our food can be seen as a sign of possible contamination, as hair can contain various substances like sweat, dandruff, bacteria, and sebum. This potential threat to our well-being activates a primitive response that urges us to avoid harmful elements.
The idea of unintentionally ingesting a part of another person, even in the form of hair, can evoke a sense of disgust. This feeling is rooted in our evolutionary biology. Humans have a biological aversion to the idea of consuming parts of their own kind. The concept of consuming something associated with the human body triggers a visceral response, often resulting in an increased sense of repulsion.
The various treatments of hair with different chemicals, such as dyes and styling products, further contribute to the negative perception of finding hair in our food. Hair treatments involve the use of chemicals that may not be suitable for consumption. The idea of unintentionally ingesting these chemicals, even in minimal amounts, can be distressing. Moreover, hair is not easily digestible, and the thought of eating it can provoke a visceral response.
Psychologically, the aversion is connected to societal norms and cultural expectations surrounding hygiene. Eating is an intense sensory experience that involves a visible aspect, taste, and smell, and the presence of a foreign element like hair disrupts the expected purity of what we consume. In many cultures, cleanliness is associated with health, and finding hair in our food is often linked to impurity, triggering a response that ranges from mild discomfort to outright repulsion.
This combination of biological, psychological, societal, and cultural factors contributes to the heightened negative reaction when encountering hair in our food. The strong negative response, including feelings of disgust and the potential to become nauseous, can be seen as a protective mechanism embedded in human behavior. This aversion is essentially a natural defense mechanism against potential health risks.
See also:
What is keratin?
What is hair made of and how does it grow?