Aging is often described as a linear process, but new research suggests that it may actually occur in bursts or spikes. Scientists have been analyzing age-related markers such as proteins and DNA tags in the bloodstream to understand how aging happens.
Studies have found that people tend to age more rapidly around certain ages, including 44 and 60. These spikes are associated with changes in metabolism, immune function, and muscle function. One study on mice found three discrete stages of aging, while another study on humans found significant jumps in protein concentrations at the fourth, seventh, and eighth decades of life.
The findings have sparked debate among experts, with some arguing that aging may occur in phases rather than spurts. However, researchers are eager to learn more and are planning longitudinal studies to track changes over a person’s lifetime.
These new insights could lead to more targeted health management, as individuals can focus on specific age-related changes and conditions. Ultimately, understanding the biology of aging holds promise for helping people live better and healthier lives.
Source: https://www.sandiegouniontribune.com/2025/03/25/do-we-age-steadily-or-in-bursts