"Calcium supplements have small inconsistent benefits on fracture reduction but probably have an unfavourable risk: benefit profile," the researchers wrote in the conclusion of their study.
"Collectively, these results suggest that clinicians, advocacy organizations, and health policymakers should not recommend increasing calcium intake for fracture prevention, either with calcium supplements or through dietary sources."
Currently, it's recommended that older men and women get at least 1,000 to 1,200 milligrams of calcium a day to maintain bone density. A whopping 30 to 50 percent of women over age 50 currently take a calcium supplement of some kind. Many people also take vitamin D supplements, which helps with calcium absorption.