Aging is strange. You’re trucking along, enjoying your middle-aged life, finally feeling like a real adult, when one day you look in the mirror and gasp. “Where were they? Wrinkles Did it come from?” “Is that skin on my hand…Crappie?!?” “Why me painful Like that?”
Somewhere in your mid-40s, you start to notice Clear signs of aging Which seems to have arrived overnight. You assumed it was a gradual process that you just didn’t notice, but it sure as heck felt like it happened really fast.
The science behind the ‘overnight’ change
New research indicates that it may very well be. A 2024 study by Stanford researchers tracked thousands of different molecules in people aged 25 to 75 and found that people make two big leaps in aging — one around age 44 and another around age 60. These findings show that aging can actually occur in bursts.
“We don’t just change slowly over time. There are some really dramatic changes,” said senior study author Michael Snyder, PhD, a geneticist and director of Stanford University’s Center for Genomics and Personalized Medicine. “Just like the early 60s, the mid-40s is a time of dramatic change. And that’s true no matter what class of molecules you look at.” The researchers hypothesized that changes in the mid-40s due to menopausal or perimenopausal changes in women influenced the overall numbers, but when they separated the results by sex they saw similar changes in men in their 40s.
“This suggests that while menopause or perimenopause may contribute to the changes seen in women in their mid-40s, there are other, more important factors influencing these changes in both men and women. Identifying and studying these factors should be a priority for future research,” said study author Xiaotao Shen, PhD, a former Stanford University endodontology scholar. in singapore.
What is behind these ‘bursts’?
The study involved 108 participants who submitted blood and other samples every few months for several years. The scientists tracked age-related changes in 135,000 different molecules — about 250 billion distinct data points — to see how aging occurs.
This study may shed light on the reasons for jumps in certain diseases and disorders at certain ages. For 40-somethings, scientists found significant changes in molecules related to alcohol, caffeine, and lipid metabolism, heart disease, and skin and muscle. In their 60s, changes were found related to carbohydrate and caffeine metabolism, immune regulation, kidney function, heart disease, and skin and muscle.
Lifestyle is a factor
The study’s authors note that lifestyle may play a role in some of these changes. For example, alcohol metabolism can be affected by people drinking heavily in their 40s, which is a period of high stress for many people. However, the researchers added that these bursts of aging in the mid-40s and early 60s indicate that people at those ages want to pay closer attention to their health and make lifestyle changes that support overall health, such as increasing exercise or limiting alcohol.
The research team plans to study these drivers to find out why these aging bursts occur at these ages, but whatever the reasons, it’s nice to know that the sudden onset of age-related problems isn’t just in our imaginations.
It’s understandable that we worry about aging, because the physical signs of aging remind us of our own mortality. We also have all kinds of social messages that tell us that young is ideal and beautiful and old is bad and ugly, so of course we give aging a side-eye. But none of us can completely escape aging, so the more positive and healthy we are in our approach to aging, the better off we will be, no matter when and to what extent age affects us.
This story originally appeared two years ago. It has been updated.
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