CNN —The bones of teens and young adults who lost significant weight after bariatric surgery were weaker than those of youth with similar levels of obesity who did not have surgery, a new study found. Despite counseling, teens and young adults who did not undergo weight loss surgery continued to gain weight over those two years, the study found. However, it’s difficult to accurately study bone loss in adolescents and young adults. A study would need to follow teens who underwent surgery for at least 10 years to determine if the bone loss seen in the new study lasts, Inge said. “That’s why we insist that people undergoing weight loss surgery take their multivitamin with calcium and vitamin D every day, just like medicine.”

---

Persons: Miriam Bredella, “, ” Bredella, Don’t, Thomas Inge, Robert H, Lurie, ”, Inge, they’re, Bredella, it’s, Justin Ryder, Ryder, Heike Faber, iStockphoto, haven’t, ” Ryder, ” Inge Organizations: CNN, Harvard Medical School, Massachusetts General Hospital, Ann, Lurie Children’s Hospital of Chicago, NASA, BMI, Northwestern University’s Feinberg School of Medicine, “ Locations: Massachusetts, Boston, Chicago