CIRC - Vit D Therapy in HTN

"Vitamin D Therapy in Individuals With Prehypertension or Hypertension The DAYLIGHT Trial"

"Conclusions—Vitamin D supplementation did not reduce blood pressure in individuals with prehypertension or stage I hypertension and vitamin D deficiency. Our findings suggest that the association between vitamin D status and elevated blood pressure noted in observational studies is not causal."   

http://circ.ahajournals.org/content/131/3/254.abstract