1. Aging: As people age, their skin undergoes changes that can contribute to body odor. For those with oily skin, the oxidation of oil secretion can produce 2-nonenal, a pungent aroma.
On the other hand, individuals with dry skin are prone to dryness and flakiness, which can lead to bacterial decomposition and unpleasant smells, often referred to as "old people smell.
2. Diseases: Aging diminishes the body's immune response, making the elderly more susceptible to skin infections like rashes, eczema, and ulcers. These conditions can cause odorous symptoms.
Furthermore, many seniors suffer from chronic diseases such as diabetes and uremia, which can also result in body odor.
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