NPR : News

Filed Under:

Old People Smell Different, Not Worse

If you've ever spent time where the elderly congregate, you may have wondered: Do old people smell different?

Well, it's not just you. Old and young people do give off distinctive odors, according to a study just published online in the journal PLoS ONE. Researchers from the Monell Chemical Senses Center in Philadelphia and Sweden's Karolinska Institute found that people can reliably distinguish the body odor of elderly people from a whiff of the young or middle-aged.

But contrary to the stereotype, the characteristic odor of the elderly is actually pretty neutral. And it's a lot more pleasant than the body odor coming from younger folks — especially the guys.

To collect youthful, middle-aged and elderly body odors, researchers had people in each age group bathe with odorless soap before bed and wear special t-shirts with absorbent underarm pads while they slept. The scientists were after the oily secretions of the apocrine glands, which are found anywhere on the body where there's hair.

"We're trying to identify what signals are hidden within the body odor," study author Johan Lundstrom tells Shots. Previous research has shown that people can identify family members, and even sick people, from body odor alone. They wanted to see if the same was true for age.

Another group of volunteers had the unenviable task of sniffing the different odors, rating their intensity and unpleasantness, and trying to sort them by age group. "We could see that the body odors from the old people were grouped together quite consistently," Lundstrom says. "The old body odors stick out." Young and middle-aged odors, however, were much harder to tell apart.

They also smelled a lot worse — particularly the men's. Women's odors were perceived to have about the same neutral smell and mild intensity throughout all three stages of life, while young and middle-aged men's odors were rated more intense and worse-smelling. But elderly men's odors were perceived to be quite similar to those of elderly women: mild and neutral.

"If you look at the guys, they're getting stinky and even more stinky from young to middle age," Lundstrom says. "As we get older, guys are turning more gender-neutral."

What exactly is causing the shift in elderly odors, or what explains our ability to detect the difference, isn't clear. Lundstrom says there could be an evolutionary benefit, as a means of identifying people with good genes that have let them survive into later life. Or it could just be a side effect of aging.

As for the conventional wisdom that old people tend to smell bad, Lundstrom says context is to blame. He says it's easy to associate advanced age with the smells of disease or poor hygiene, which can be a result of physical disabilities. "You only experience it if you go to a retirement home, or some old guy's home," Lundstrom says. But he says that doesn't mean it's how healthy elderly people, like those in his study, smell.

At least, it's not how their bodies smell. Grandma might still insist on dousing herself in perfume.

Copyright 2012 National Public Radio. To see more, visit

WAMU 88.5

The Music And Legacy Of Motown

Motown founder Berry Gordy and director Charles Randolph-Wright of “Motown the Musical" join Diane for a conversation about the history of Detroit's famous sound.


New York City To Require Sodium Warnings On Restaurant Menus

New York City has implemented a new rule requiring chain restaurants to put sodium warnings on their menus. Menu items that contain lots of salt will be marked with an icon of a salt shaker.
WAMU 88.5

Chicago Police Chief Firing And Efforts To Boost Public Trust Of Police Nationwide

Chicago's mayor fires the city's police chief amid protests over the response to the police killing of a black teenager. An update on efforts to boost public trust in police forces across the country.

WAMU 88.5

Computer Guys And Gal

Another year is coming to a close and the Computer Guys And Gal are here to discuss this year's biggest technology news, including the growth of virtual reality and the "Internet of Things."

Leave a Comment

Help keep the conversation civil. Please refer to our Terms of Use and Code of Conduct before posting your comments.