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Articles related to focusing on healthy aging, prevention, mobility, cognition, nutrition, independence, and caregiving support.

5 min

What is nonenal smell? The biology behind aging odor

According to a 2001 study published in the *Journal of Investigative Dermatology*, 2-nonenal, the compound responsible for nonenal smell, was detected exclusively in subjects aged 40 or older. This greasy, grassy odor is a distinct and natural byproduct of biological changes that occur as we age, specifically the oxidation of fatty acids on the skin's surface.

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2 min

What age group has nonenal smell? The science behind aging body odor

According to a 2001 study published in the *Journal of Investigative Dermatology*, a distinct body odor compound called 2-nonenal was detected exclusively in subjects aged 40 or older. This reveals the specific **age group that has nonenal smell**, a natural part of the human aging process.

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5 min

What causes old people to smell in the house? The biology behind age-related odor

The distinctive musty scent often associated with older individuals and their homes is a real phenomenon, not a myth, and its origins are deeply rooted in biology. While often misunderstood as a sign of poor hygiene, the characteristic odor is primarily caused by a chemical compound known as 2-nonenal, which is a natural byproduct of the aging process. Understanding what causes old people to smell in the house can dispel stigma and inform practical solutions.

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