Researchers at the University of Calgary are currently seeking participants for a new trial which hopes to determine how much vitamin D is enough to build and maintain healthy bones.
The researchers are currently seeking 300 volunteers between the ages of 55 and 70 to participate in a randomized controlled trial. In the trial, 100 volunteers will receive 400 IU/day of vitamin D, 100 volunteers will receive 4,000 IU/day, and 100 volunteers will receive 10,000 IU/day.
“There are currently no large-scale, high quality studies that look at the relationship of bone strength and vitamin D dose,” stated Dr. Steven Boyd, a member of the research team. “This study will provide evidence that will help people determine how much vitamin D is appropriate for their bones.”
During the trial, the volunteers will have their bone density and strength measured by the world’s first XtremeCT2 machine. This machine allows researchers to take very detailed pictures of the bone to see exactly what is happening in the bone at different vitamin D doses.
“No one has really been able to establish what clearly is the best dose of vitamin D. We have a pretty good idea that it’s at least 400 units a day in addition to what we get in our diets, but there remains controversy as to whether that is just adequate and whether there’s more benefit in taking a higher dose,” said Dr. David Hanley, another member of the research team.
The study is set to follow participants over the next 3 years. Along with bone health, the researchers will look at how vitamin D relates to things like mood and depression.
If you meet the criteria and are interested in participating in the study, you can contact the study team by emailing [email protected] or by calling 403-220-3888.