'Old Person Smell'
summary
The distinct musty odor associated with aging is caused by the production of a chemical compound called 2-nonenal, which occurs as skin lipids oxidize and break down over time. This process is a natural biological transition similar to graying hair and is not a result of poor hygiene. While the scent begins to develop gradually around age 40, it is often less intense and less unpleasant to others than common stereotypes suggest.
key points
- 2-nonenal is created when fatty acids in the skin's natural oils change composition and oxidize, a process that accelerates as the skin's ability to repair itself slows down.
- Research indicates that age-related body odor is not inherently unpleasant, with some blind tests showing that older adults' scents are rated as less intense and offensive than those of younger age groups.
- While the skin continuously produces 2-nonenal, making it difficult to fully remove with soap, managing the scent involves regular hygiene, antioxidant-rich diets, and reducing oxidative stress.
who should read it
Individuals noticing changes in their own body scent as they age or those interested in the biological processes of skin aging.
discussion mixed
consensus
Commenters agree that 'old person smell' is linked to the chemical 2-nonenal, though they debate the efficacy of available treatments. While some suggest persimmon-based soaps and specific laundry sanitizers, others argue that synthetic athletic fabrics exacerbate odor retention regardless of age. There is a general sentiment of frustration that a clear, clinically proven medical solution has not been widely commercialized since the chemical's discovery in 2001.
top insight
The discussion shifts from biological causes to material science, noting that synthetic athletic fibers trap odors far more aggressively than natural fibers like wool or cotton. This suggests that perceived body odor in older adults or athletes may be as much a result of 'plastic' clothing retaining chemicals as it is the biological production of the odors themselves. This perspective reframes the problem from a purely physiological one to one of textile interaction.
Generated by an LLM from the article and thread. Check the sources before relying on it.