At what age it really starts to age, according to science

An investigation based on blood tests has discovered

Researchers at Stanford University have concluded in a recent study the age at which people begin to age.

According to his analysis, published last December in Nature Medicine, from the age of 34 the first signs of aging begin to be detected.

To do this, scientists have studied the levels of 373 proteins that circulate in the blood in a sample of 4,263 people between 18 and 95 years.

The results of the study have shown that physiological aging does not occur at a uniform rate, but rather traces a trajectory with three inflection points in the human life cycle. The first of these points occurs at the age of 34, the second takes place at 60, and the third at 78.

In these three ages, the number of proteins transmitted by the blood exhibit remarkable changes, according to Tony Wyss-Coray, professor of neurology and neurological sciences and lead author of this study. “This happens because instead of simply increasing or decreasing steadily or staying the same throughout life, the levels of many proteins remain constant for a while and then at one point or another experience sudden changes up or down,” he says. Wyss-Coray.

These changes tend to be grouped into three specific points in a person’s life: early adulthood, late middle age and old age.

As they point out from this study, the finding could have applications when it comes to detecting age-related conditions, such as Alzheimer’s or cardiovascular diseases.