Sniffing out Alzheimer’s A peanut-butter smell test could help diagnose the neurodegenerative disease in its early stages.

In a small pilot study of patients displaying signs of cognitive decline, researchers at the McKnight Brain Institute Center for Smell and Taste and the University of Florida (UF) found that peanut butter can help identify those with Alzheimer’s disease (AD), a neurodegenerative disorder often accompanied by a loss of smell.

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