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Early-stage Alzheimer's

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 The researchers discovered that those who had an impaired sense of smell in the left nostril had early-stage Alzheimer's. They noted that the participants needed to be an average of 10 centimeters closer to the peanut butter container in order to smell it from their left nostril compared to their right nostril. For comparison, if you are sitting inside a small dining room with your eyes closed and have seen two figures on the table before moving forward one step, then even though this might not seem like much difference between seeing them at opposite ends because they can't see each other but only hear all around them; however, when looked at objectively across several years these differences could provide clues about risk factors. 



The scientists also found evidence for cognitive impairment among people undergoing brain imaging studies as young children or adolescents diagnosed by psychiatrists over a period longer than seven years. A finding similar was observed after using MRI scans prior to known cases of dementia such Asperger syndrome.




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