Teresa Janz and Caryn Pearson, analysts with the Health Statistics Division, used data from the Canadian Health Measures Survey. This survey collects direct physical measures of the Canadian population ages 3-79 from August 2009 to November 2011.
The findings, published in Health at a Glance, found 89 percent of children ages 3-5 had sufficient levels of vitamin D for bone health at levels at or above 50 nanomoles per liter.
Those ages 20-39 had the lowest percentage of sufficient vitamin D for proper bone at 59 percent.
In terms of concentrations, those youngest ages 3-11 and oldest age 60-79 had the highest levels of vitamin D in their blood, while generally, females had higher levels of vitamin D than males.
About one-third of Canadians took a supplement containing vitamin D. Overall, 85 percent of supplement users had levels of vitamin D above the cut-off, compared with 59 percent who did not take supplements.
During the winter months 60 percent of Canadians has sufficient vitamin D for bone health, compared with 75 percent in the summer.