| Effect | Decrease |
| Values | -0.30 mM versus placebo. |
| Trial Design | Randomized trial |
| Trial Length | 1-6 months |
| Number of Subjects | 105 |
| Sex | Both Genders |
| Age Range | 18-29, 30-44, 45-64, 65+ |
| Body Types | Overweight, Average |
This trial randomized healthy people with vitamin D levels no greater than 30 ng/dL to receive 800 IU vitamin D or placebo daily for 12 weeks. The participants received this treatment during the winter months in northern Germany. Both of these factors increase the chances of being vitamin D insufficient or deficient.
There was no effect on the main study outcomes (CVD risk markers such as blood pressure and cholesterol), but a slight drop in RBC count, hematocrit, and erythrocytes was seen in the vitamin-D group.
