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Older Adults Who Can Really Smell the Roses May Face Lower Likelihood of Dementia

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Seniors who can identify smells like roses, turpentine, paint thinner, and lemons, and have retained their senses of hearing, vision, and touch, may have half the risk of developing dementia as their peers with marked sensory decline.

In a study by UC San Francisco, researchers tracked close to 1,800 participants in their 70s for a period of up to 10 years to see if their sensory functioning correlated with the development of dementia. At the time of enrollment, all participants were dementia-free, but 328 participants (18 percent) developed the condition over the course of the study.

Among ...