Research Indicates Ages 44 and 60 as Two Rapid Aging Periods in Humans

A research conducted at Stanford University School of Medicine in the United States has revealed that significant changes occur in the molecules and microbial populations within our bodies as we enter our forties and sixties, potentially increasing risks related to health and disease. These changes suggest that aging is not a gradual process but consists of distinct periods of rapid transformation.

Researchers examined thousands of different molecules and microbial populations in individuals aged 25 to 75, including bacteria, viruses, and fungi living within and on our bodies, and found that the abundance of most molecules and microbes does not change gradually. Instead, two rapid periods of change occur in our lives, typically around the ages of 44 and 60. A paper detailing these findings was recently published in the journal "Nature Aging".

These significant changes could impact our health - molecules associated with cardiovascular diseases showed marked alterations at these two time points, while molecules related to immune function changed around the age of 60.

This new study analyzed data from participants who donated blood and other biological samples every few months over several years; scientists tracked a wide range of molecules, including RNA, proteins, and metabolites, as well as changes in participants' microbial populations. Researchers monitored age-related changes in over 135,000 different molecules and microbes, encompassing nearly 250 billion data points in total.

The study revealed that in individuals in their forties, significant changes occurred in the quantities of molecules associated with alcohol, caffeine, lipid metabolism, cardiovascular diseases, skin, and muscle; while in individuals in their sixties, significant changes were observed in molecules related to carbohydrate and caffeine metabolism, immune regulation, kidney function, cardiovascular diseases, skin, and muscle.