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Although age is calculated in the number of years passed, researchers have shown that each organ in our body releases a number of proteins into the blood that are characteristic of its biological age.
Are we really, as the conventional expression describes it, “the age of our arteries”? According to an American study from Stanford University, it appears to be so in the truest sense of the word. Researchers have shown that every organ in the body releases it into the blood Proteinswhich make it possible to determine biological age, explains the review Nature.
In detail, the artificial intelligence identified 5,000 blood proteins in 5,676 people, allowing the identification of 756 proteins that were shown to be more specifically linked to a particular organ. But one thing came out: The rate of aging was faster in some when affected by a pathology.
Detectable with a blood test
“This study is particularly interesting because it shows that specific measurements of tissues or organs can be made with a simple blood test and is therefore a minimally invasive method. This allows us to obtain a huge amount of very meaningful data,” explains Mirko Francesconi, Inserm researcher at the Laboratory of Cell Biology and Modeling at ENS Lyon, to France Culture.
“Of course there are limits. This study does not determine whether the changes observed at the protein level are a cause or a simple consequence of aging.” he is nevertheless tempered.
All organs are affected by Alzheimer’s
The fact is that this aging occurs in numerous pathologies. Biologically speaking, the kidneys of diabetics or hypertensives are one year older than those of people who are not affected by these diseases, without this having an impact on their functionality. Worse, a certain age can have unfortunate consequences: a heart four years older would result in a 2.5-fold increase in heart risk under age 15.
Of all tested subjects, organ aging was found in 20%. In people who suffered a heart attack or had Alzheimer’s disease, all organs were affected.
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