New Study Investigates Link Between Idle Lifestyle And Biological Aging

in #science7 years ago (edited)

Each of us has a chronological age and we also have a biological age, and the latter can be said to be a reflection of how well our body is functioning overall. Researchers at the University of California-San Diego (UCSD) recently investigated the effects of a sedentary lifestyle on biological cell age in elderly women. They discovered that a lifestyle with little physical activity, will cause our cells to age faster.

The scientists published their findings in the American Journal of Epidemiology.

There are a number of different kinds of activities that can impact the progression of our cellular aging: exercise, stress, alcohol consumption, smoking, environmental toxins, diet, etc.

In order to determine a true biological age, past researchers have considered looking at things like blood pressure, cognitive abilities of the individual, any possible markers of their kidney, or liver, lungs, how their immune system is functioning, bone density, body fat, and more.

The study involved roughly 1,481 participants of elderly women who were on average 79 years old. Specifically, they were analyzing the link between leukocyte telomere length (LTL) and sedentary time. Sedentary time was assessed with an accelerometer and self-reporting.

The participants reported their own answers when they filled out the questionnaires but they were also tracked of their movements by an accelerometer. The results were adjusted for variables such as health-related factors, body mass index, demographics, and lifestyle.

The Results

They discovered that for the participants who spent less than 40 minutes a day exercising, and roughly 10 hrs per day sedentary, that they were likely to have biologically older cells than those who exercised more and had more of an active lifestyle.

They estimated to see roughly an 8-year biological age gap, when comparing those who exercised with those who did not.

Our chronological age is one thing, but it might not necessarily match up to what our true underlying biological age is. And 30+ minutes a day of moderate exercise on a regular basis might not be such a big sacrifice to make if it's going to eventually pay off much bigger in the long run. According to one Harvard study from a few years ago, they estimated that walking for 30 mins a day at least 5 days a week, would add on about 7 years to your life.

Pics:
C: Chloe Cushman/via Financial Post
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The information that is posted above is not intended or implied to ever be used as any substitute for professional medical advice, or diagnosis or treatment. The above is posted for informational purposes only.

Sources:
http://www.livescience.com/51506-aging-in-young-people.html
https://academic.oup.com/aje/article/doi/10.1093/aje/kww196/2915786/Associations-of-Accelerometer-Measured-and-Self
http://harvardmagazine.com/2013/03/cheating-the-reaper

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