The passage of time may be linear, but not the course of human aging. Instead of a gradual transition, our lives swing through childhood growth spurts to a sudden acceleration of aging over the decades.

A recent study, published in the journal Cell, has identified a crucial turning point where this process accelerates significantly: around the age of 50. After this threshold, the trajectory by which our tissues and organs age becomes much steeper.

A team led by the Chinese Academy of Sciences analyzed proteins in the human body across a wide range of ages, revealing that our blood vessels are among the tissues that weaken the earliest and fastest.

Researchers collected 516 samples from 13 different tissues of 76 donors (aged 14 to 68 years old). They covered seven major systems: cardiovascular, digestive, immune, endocrine, respiratory, skin and muscle.

Building a catalog of proteins, the team observed how their levels changed with age. The findings showed that the most pronounced changes occur between the ages of 45 and 55. In this period, many tissues undergo significant remodeling, with the aorta (main blood vessel) showing the highest sensitivity.

Even the spleen and pancreas undergo drastic changes, affecting immunity and nutrient metabolism. The study found that the activation of 48 proteins associated with diseases, including cardiovascular conditions, tissue fibrosis and liver tumors, increases with age.

To test the findings, the researchers isolated an aging protein from rat aortas and injected it into young mice. The result was alarming: the treated animals displayed reduced physical strength, lower endurance and clear markers of vascular aging.

This research suggests that aging is not a uniform process, but a series of complicated steps that affect different systems at different times. Another previous study had suggested two more peaks (around ages 44 and 60), reinforcing the idea that our bodies go through biological “shocks” at certain times.

Understanding these turning points helps doctors develop targeted interventions to make the aging process easier and prevent chronic diseases before they become irreversible. /tesheshi.com/

We use cookies to improve the experience and display ads (Google AdSense).
By clicking “Accept”, you agree to the use of cookies according to
Privacy Policy
and
Cookies Policy.
You can reject non-necessary cookies by clicking “Reject”.

Source: prizrenpost