If foreigners are surprised to learn your real age by meeting you, you can feel happy to give it to large genes, but it’s a little more than that.
According to a new study, when you look significantly younger than your chronological age, it’s not just an optical illusion, your skin is aging at a slower rate than the normal.
In a recent study published in the journal of the American Academy of Dermatology , researchers tested skin samples from 158 Caucasian women aged 20 to 74. Scientists analyzed skin samples taken from each participant from two parts of the body: an area generally exposed to the skin. the sun (like the face or arms) and an area generally protected from exposure to the sun (the buttocks). In addition to the skin samples, the researchers also analyzed saliva samples to conduct genetic tests.
Among their discoveries, the most notable concerns changes in gene expression between the ages of 20 and 70. Changes in oxidative stress due to environmental factors (imbalance between the production of free radicals and the capacity of antioxidants) and exposure to UV rays have been identified as the main responsible for the genetic expressions that cause changes in the skin over time.
But, surprisingly, researchers have also found that among participants appearing younger than their chronological age, the expression of skin genes corresponded to that of an older age group eune. This means that women who looked considerably younger than their peers had better cell turnover, better collagen production, and skin capable of reacting to oxidative stress, much like a woman under the age of one. The primary author of the study, dermatologist Alexa Kimball, MD, on the faculty of the Harvard Faculty of Medicine at Beth Israel Deaconess Medical Center, said that the results had completely surprised the team. of research. “We were particularly surprised by the identification of a group of women who not only had much younger skin than one would expect based on their chronological age, but who also had an expression profile specific gene mimicking the biology of much younger skin, says Dr. Kimball. It looks like their skin looked younger because it behaved younger. ”
Overall, the study has helped scientists determine how, in the future, increased expression of certain genes may help slow the effects of aging on the skin. Until then, women who look decades younger can rest assured that their skin matures much more slowly than their high school peers.