Medindia

X

High Sodium Intake may Sleep Up Ageing in Obese Teens

by Dr. Enozia Vakil on  March 21, 2014 at 10:54 PM Research News   - G J E 4
Consumption of lots of salty food among overweight teens may speed up ageing, a new research found."Lowering sodium intake, especially if you are overweight or obese, may slow down the cellular aging process that plays an important role in the development of heart disease," said Haidong Zhu, M.D., Ph.D., lead author of the study and assistant professor of pediatrics at Medical College of Georgia, Georgia Regents University in Augusta.
 High Sodium Intake may Sleep Up Ageing in Obese Teens
High Sodium Intake may Sleep Up Ageing in Obese Teens
Advertisement

Previous research found that protective ends on chromosomes (telomeres) naturally shorten with age, but the process is accelerated by smoking, lack of physical activity and high body fat. The current study is the first to examine the impact of sodium intake on telomere length.In the study, 766 people 14-18 years old were divided into the lowest or highest half of reported sodium intake. Low-intake teens consumed an average 2,388 mg/day, compared with 4,142 mg/day in the high-intake group.

Advertisement
Both groups consumed far more than the 1,500 mg/day maximum (about 2/3 teaspoon of salt) recommended by the American Heart Association.After adjusting for several factors that influence telomere length, researchers found:
  • In overweight/obese teens, telomeres were significantly shorter with high-sodium intake (T/S ratio of 1.24 vs. 1.32). T/S ratios are the ratio of the length of the telomere to the length of a single gene.

  • In normal weight teens, telomeres were not significantly different with high-sodium intake (T/S ratio of 1.29 vs. 1.30).
"Even in these relatively healthy young people, we can already see the effect of high sodium intake, suggesting that high sodium intake and obesity may act synergistically to accelerate cellular aging," Zhu said.

Obesity is associated with high levels of inflammation — which also hastens telomere shortening — and increases sensitivity to salt, which may help explain why higher sodium intake had a greater effect in that group."Lowering sodium intake may be an easier first step than losing weight for overweight young people who want to lower their risk of heart disease," Zhu said. "The majority of sodium in the diet comes from processed foods, so parents can help by cooking fresh meals more often and by offering fresh fruit rather than potato chips for a snack."



Source: Eurekalert
Advertisement

Post your Comments

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.
User Avatar
* Your comment can be maximum of 2500 characters
Notify me when reply is posted I agree to the terms and conditions

You May Also Like

Advertisement
View All