Exercise can change your DNA. That’s the startling conclusion of a recent research study published in the peer reviewed journal Cell Metabolism. If you need one more reason to exercise beyond reducing your risk of diabetes and heart disease, which, let’s face it, are pretty good reasons, this is it.
Our DNA is subject to change all the time. Most of the time the changes are negative. Carcinogens like cigarette smoke, chemicals and other pollutants can set us up for deadly mutations of the DNA code. And as we age, our body builds new cells to replace the old ones. Unfortunately, the copies aren’t always perfect. Ever been to an office where the forms have been copied so many times that the words are a bit blurry and the lines are wavy? That’s the aging process in action. Functionally, these less than perfect cell copies don’t work as well as the originals.
The DNA of these older cells is a bit different and cannot access the genes as well as their younger counterparts. But hey, that’s just part of life right? Well, that’s what a lot of people thought, but this study indicates otherwise. Even researchers who have stressed the importance of exercise were impressed with these results.
The participants in this study were sedentary. In other words, they were couch potatoes. The group was put through a single workout. Thigh muscles were biopsied before and after the workout. The focus of the study was a process called methylation. This inhibits the cells expression of certain genes. What Juleen Zierath of the Karolinska Institute in Stockholm and her team discovered was that exercise…even a single session of exercise…promoted demethylation. This changes the DNA allowing better expression of genes. Essentially, exercise is a DNA tune up.
So what can you take away from this study? Even a little exercise can make a difference…all the way down to the cellular level. So turn off the TV and get moving. Your DNA will love you for it.

