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I'm self-employed boxing silvitra cheap history funny How's this for a low-tech way of diagnosing Alzheimer's: sniffing peanut butter. Researchers at the University of Florida have discovered some merit to the bizarre-sounding notion, reports Futurity. Knowing that patients in cognitive decline often lose their sense of smell first, the researchers had patients sniff a dollop of peanut butter with each nostril separately. They used a ruler to measure the point at which people detected the odor (and to keep the other nostril closed).