Researchers at the University of Alberta say the study involved 43 children and teens ages 3-18, who were diagnosed with celiac disease.
Diana Mager, one of the researchers, says the study showed the children got less than 50 percent of their recommended dietary intake of vitamin K as well as low levels of vitamin D.
"Children with celiac disease are at risk for poor bone health, but by adding vitamins K and D to their diets, it can help reduce the risk of fractures and osteoporosis," Mager says in a statement.
Children with celiac disease should include physical activity in their daily routines to build bone strength and boost their vitamin D levels from the sun by exercising outside, the researchers advise.
"Enjoying activities such as walking and running outdoors when there is more sunshine is a great way to contribute to healthy bones," Mager says.