Of the 24 patients tested who had mild cognitive impairment, which sometimes signals Alzheimer’s disease and sometimes turns out to be something else, about 10 patients showed a left nostril impairment and 14 patients did not
Peanut butter was used because it's a so-called " pure odorant "
Generally our sense of smell actually incorporates two distinct sensations: the olfactory sense, or smell, as well as a trigeminal sense, which is like a more physical burning or stinging sort of sense. Peanut butter has no trigeminal element; it's only olfactory, which makes it ideal for testing, as the link to Alzheimer's is specifically dealing with the olfactory sense
This test could be used by clinics that don’t have access to the personnel or equipment to run other, more elaborate tests required for a specific diagnosis, which can lead to targeted treatment.
The peanut butter test would be a useful tool to add to a full suite of clinical tests for neurological function in patients with memory disorders.
This is now. Later is later.