Here’s Why ‘Old Person Smell’ Is a Real Thing and How You Can Fix It
While we deeply love and respect our elders, we also recognize that aging brings more than just wisdom. Physical changes in older individuals extend beyond external appearance.
One notable change is a distinct body odor, often referred to as “old person smell.” Though the term is not particularly flattering, science has shown that it is a real phenomenon. This odor is typically musty, with subtle undertones of oil or grease, and seems to emanate from the skin’s pores.
You may notice it in the home of a relative, in nursing homes, or even in public places, but it’s important to understand that this odor has little to do with hygiene. According to researchers, the smell is caused by a compound called 2-nonenal. As we age, hormonal changes lead to an increase in fatty acids on the skin.
Our antioxidant levels also decrease, making the fatty acids more prone to oxidation, which results in the production of nonenal. This compound can linger on the skin even after washing, particularly around the chest and back areas.
There are factors that can intensify this odor, such as dirty laundry, confined spaces, and dehydration. Illness and medications can also play a role. A 2001 study published in the Journal of Investigative Dermatology found that elderly individuals had higher concentrations of nonenal on their clothing.
A more recent study from 2012 suggests that humans’ ability to recognize the scent of aging may be linked to a subconscious connection with our ancestors. Similar to animals, humans may have once been able to assess the age and health of others through scent.
The Japanese have a specific term for this smell—kareishu—and several companies in Japan have developed products to address it. These include perfumes, body washes, and deodorizers, with some, like persimmon-based products, claiming to neutralize the odor completely.
However, there are several lifestyle changes that can help mitigate the smell. Regular exercise boosts metabolism, helps balance hormones, and reduces stress. Another simple but effective step is to launder clothes more frequently, as nonenal can build up on fabrics. Eating a diet rich in antioxidants and staying hydrated can also benefit the skin, as dehydration not only dries it out but can also contribute to body odors.
While hygiene plays an important role, one of the easiest things you can do is to open windows and let fresh air circulate. Growing older is a natural part of life, and the changes in our bodies are to be expected. However, showing our elders love, respect, and compassion will never age.
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