Mucophagy

Mucophagy is the act of consuming one's own nasal mucus, commonly known as snot or boogers.

While often considered a socially unacceptable behavior, mucophagy is generally not considered harmful. There is some debate as to whether it may even provide minor health benefits. Proponents of this idea suggest that consuming nasal mucus may expose the body to antigens trapped within the mucus, potentially boosting the immune system in a similar way to vaccination. However, scientific evidence supporting this claim is limited and largely anecdotal.

The composition of nasal mucus varies depending on environmental factors and the individual, but it typically consists of water, mucin glycoproteins, antibodies, salts, and exfoliated epithelial cells.

While mucophagy itself is not typically dangerous, excessive nose-picking, often a precursor to mucophagy, can lead to nosebleeds and, in rare cases, infections. Therefore, maintaining good hygiene and addressing underlying causes of excessive mucus production is often recommended.