A sleep test will tell us how old our brain isDementia risk It grows at an exponential rate, so much so that the World Health Organization (WHO) estimates that it will affect 150 million people by 2050. It is dementia, an increasingly worrying public health problem that is still too often not correctly diagnosed. To help doctors identify the patients who suffer from it and understand who is at greater risk of getting sick, a new tool comes today from the laboratories of Massachusetts General Hospital and the Beth Israel Deaconess Medical Center: the Brain Age Index (Bai), a non-invasive sleep test capable of estimating the true age of the brain (biological ageDifferent from chronological age. It is a measure of the body's ageing, based on the effectiveness of the mechanisms that keep cells young and on markers of the functionality of organs and apparatus.) and calculating the risk of developing dementia.
The number of people with dementia is expected to triple by 2050.
Assess Brain AgeThe new test, relying on a simple electroencephalogram (Eeg) and an artificial intelligence algorithm, can calculate the difference between a person’s age and the biological ageDifferent from chronological age. It is a measure of the body's ageing, based on the effectiveness of the mechanisms that keep cells young and on markers of the functionality of organs and apparatus. of his brain. The Eeg, in fact, measures brain activity during sleep, while the automatic learning algorithm compares this analysis with the chronological age and a large set of data available on sleep. From this comparison we can understand if the brain is aging faster than normal: a high Bai score, for example, indicates an abnormality in the brain aging process, which may mean a faster cognitive decline process. For researchers this is an important progress, because the electroencephalogram is a much less expensive and more practical tool (it can also be performed in non-specialized laboratories or at home, using a headset equipped with electrodes) than the MRI used so far.
People with dementia have an average brain age 4 years older than their peers.