l*****7
发帖数: 8463 | 2 A soda a day could be making your skin look older, new research finds.
Moodboard/Corbis You might want to rethink that soda.
Related
Spot the Warning Signs of Suicide
Tickle Me Pink: Fun Facts About Tickling
More in HEALTHY LIVING
Key Takeaways
Sugar can lead to wrinkles, acne, or a psoriasis flare-up.
For a healthy alternative to soda, add fresh fruit to water.
Always read food and drink labels carefully; if an ingredient ends in “ose,
” that’s a good sign it’s sugar.
Wednesday, October 22, 2014
If the threat of heart disease, diabetes, or obesity wasn’t enough to make
you put down your afternoon cola, this might: A new study published in the
American Journal of Public Health reports that drinking one sugary soda a
day may speed up the rate at which your body ages.
Researchers at the University of California, San Francisco, looked at a
sample of 5,300 healthy adults aged 20-65 and found that those who drank an
8-ounce serving of soda a day over the course of three years experienced an
additional 1.9 years of aging. Drinking a daily 20-ounce serving of soda in
that same time period, meanwhile, was linked to a whopping 4.6 more years of
aging — similar to the amount of added aging associated with smoking.
The researchers who worked on the study found that the soda drinkers had
shorter telomeres — the protective ends of DNA that are found in every cell
in the body — than those who don’t drink soda daily.
“A good analogy would be the plastic ends of a shoe lace — they keep the
shoe lace tethered together,” says Adam Friedman, MD, FAAD, an Everyday
Health columnist and an assistant professor of dermatology at Montefiore
Medical Center – Albert Einstein College of Medicine in New York. “That’s
kind of what a telomere is — it’s at the edge of DNA, helping to protect
and repair it.” Over time, telomeres get shorter and shorter until they
ultimately fall apart, signaling the cell to die, Friedman explains.
However, it’s still just speculation as to whether the sugar in soda is
what actually causes extra aging. “There could be something else in soda
that [caused] an accelerated shortening of the telomeres,” notes Friedman.
How Sugar Ages You
“This concept of sugar and aging, it’s not really new news, because we’ve
heard so much about sugar over the years — how it can hurt your heart, how
it can hurt your brain, how it can suppress your immune system,” says
Bonnie Taub-Dix, MA, RDN, CDN, author of Read It Before You Eat It and the
writer behind the Everyday Health Column, Nutrition Intuition. “And if you
have these medical issues, they all chip away at you and therefore cause you
to age more quickly.”
And all that aging can leave its mark on your skin.
“What happens over time, after telomeres shorten [is that] the ability to
repair and maintain DNA decreases, so cells don’t function properly,” says
Friedman. “So with shortened telomeres, you’ll get signs of aging,”
including wrinkles. The upper layer of your skin, known as the epidermis,
also won’t be able to function correctly and may not be able to turn over
and shed off appropriately, leading to dull skin. Sugar also increases
inflammation, which can lead to acne or a psoriasis flare-up, he says.
When it comes to soda, whether it contains sugar or an artificial sweetener,
its dehydrating effect — caused by caffeine, which is a diuretic — can
mess with your skin’s ability to bounce back. If you’re hydrated properly,
you should be able to pinch your skin and have it snap back immediately. |
