TABLE 1.

Inclusion and Exclusion criteria

Inclusion Criteria: Individuals with known Hypertension and vitamin D insufficiency

African American race (self‐reported) Repeat systolic blood pressure ≥ 160 mmHg within 1 hour of arrival 30‐74 years of age Asymptomatic state (class I as defined by Goldman Specific Activity Scale) Exclusion Criteria: Dyspnea (exertional, rest, or nocturnal) or chest pain as a primary or secondary chief complaint Prior history of heart failure, coronary artery disease, myocardial infarction, cardiomyopathy (any), valvular heart disease (any) or renal failure with current, previous, or planned dialysis Acute illness or injury that necessitates hospital admission Acute alcohol or cocaine intoxication or history of chronic alcohol (determined using the CAGE screening questions) or cocaine (self‐reported) abuse Acute or decompensated psychiatric disorder or any underlying psychiatric disorder or cognitive deficit that precludes effective ongoing communication or ability to follow‐up as required Cancer (other than skin), HIV, or any other medical condition that might limit life expectancy Hepatitis or liver enzyme (ALT, AST) elevation > 1.5x normal Planned move > 50 miles in the next 9 months History of kidney stones Glomerular filtration rate < 30 Serum calcium > 10.5 mg/dl or known history of hypercalcemia History of or known primary hyperparathyroidism Sarcoidosis or other granulomatous disease Pregnant or planning to become pregnant Allergy or known hypersensitivity to gadolinium contrast Severe claustrophobia