How Does Peanut Butter Detect Alzheimer’s?

During this test:

• The clinician will ask the person to close their eyes, mouth, and block one of the nostrils with a thumb over the nares.
• A ruler will be kept next to the open nostril as the person breathes normally.
• Then peanut butter will be placed in a small plastic cup up the ruler and will be moved at a time until the person can detect the smell.
• The distance will be recorded.
• The same test will be repeated for the other nostril.

The study needs to replicate the results using larger sample sizes to confirm the accuracy of the peanut butter test. Also, with smell impairments being much greater in some other forms of dementia, the test may give variable results and would make the diagnosis difficult. The test, unfortunately, cannot differentiate between different types of dementia.

Other most accurate early-stage diagnostic tests for Alzheimer’s are checking for an amyloid deposit on the positron emission tomography (PET) scan. However, these are more expensive, uncomfortable, and not easily available or accessible everywhere, making the diagnosis and research difficult.

The peanut smell test fulfills the need for inexpensive, accurate, and accessible testing in the early stages of Alzheimer’s to prevent treatment delay and future memory loss, so it helps with selective screening.

There are numerous studies conducted on strengthening the connection between a failing sense of smell and an early warning of Alzheimer’s.

A group of studies conducted in Minnesota discovered that seniors who had the worst smell test score were 2.2 times more likely to show signs of mild cognitive decline. Additionally, the participants were already exhibiting memory problems and obtained low smell test scores. These people are more likely to progress to Alzheimer’s.

Over 1,400 healthy seniors with an average age of 79 years have been studied for three and a half years. Around 250 people developed mild memory programs and 64 people developed dementia.

Six food items and six non-food items were tested on these senior groups. Through the study, researchers noted that as the sense of smell declined, the likelihood of memory problems and Alzheimer’s increased.

The study findings suggest that this peanut butter smell test may help identify the elderly who is likely to develop memory problems. Furthermore, if they already have these problems, it will help understand if the problems will progress to Alzheimer’s or dementia. There could be a problem linked to neurodegenerative disease in Alzheimer’s, but it is too early to use a smell test as a diagnostic tool for Alzheimer’s or dementia.

Alzheimer’s cases are on the rise and currently, there is no cure for this disease. However, large studies are being conducted to identify who may be susceptible to it and the possible treatments and prevention strategies for the progression of the disease.