Dispelling myths: the science behind the natural 'odour of age'
7 February 2024 15:44, updated: 7 March 2024 09:03
Indeed, older people do emit a scent that's difficult to pin down. Some describe this as a "mustiness", while others perceive it to be a "greasy" aroma. Although commonly attributed to poor hygiene, this presumption is incorrect.
The distinctive smell of older people isn't due to poor hygiene, according to scientists
The scent older people give off isn't accidental, neither is it a product of poor hygiene. A natural process that can be scientifically explained is behind it. In 2001, Dr. Shinichiro Haze of Yokohama, backed by his team of scientists, conducted a study into the subject.
Experts say that the distinct aroma comes from changes in the body's chemical substances. The source is a compound known as 2-nonenal, resulting from fatty acids oxidation. As an older body produces increasing amounts of these compounds, the emitted smell becomes more intense. Additionally, an aged person's skin is weaker, leading to quicker oxidation of its natural oils and thus producing more 2-nonenal.
Interestingly, scientists theorise that 2-nonenal might be a genetic residue left from our predecessors. It's believed that they could determine the age and health status of others with the help of this scent.
The 'old person scent' is a normal occurrence, but not everyone exhibits it
This scent produced by elders isn't caused by poor hygiene. It's been confirmed that frequent showers and stringent cleanliness measures don't aid in eradicating the specific smell. This is because 2-nonenal is water insoluble. Regardless of how thoroughly one washes, this scent will likely persist.
But can this scent be minimised? It seems so. Simple steps like leading a healthy lifestyle - avoiding stress, sustaining a balanced diet, consuming an adequate amount of water throughout the day, refraining from smoking and doing regular exercise - can potentially help.
Moreover, not all older adults exhibit this scent according to Dr. Haze's research. Half of the surveyed participants had such minimal levels of 2-nonenal on their bodies that they didn't emit any specific odour. But those who do shouldn't feel embarrassed - the 'old person smell' is entirely natural.
