But this statement is actually coming from one.
Vitamin D intervention studies with changes in bone mineral density or fracture outcomes have not been reported for black subjects. A small pilot study with black subjects revealed that supplementation with 800 IU/d vitamin D for 12 wk decreased serum PTH and urinary N-telopeptide concentrations (26). This suggests that longer-term supplementation with vitamin D is likely to have favorable effects on the skeleton among black subjects, although direct evidence is needed. (WTF you mean that you didn't follow through with the information that was put before you, but WE will!)