Deficiencies of calcium, magnesium, and potassium are associated with the etiology of hypertension.

The claim is specific and empirically testable, passing Step 0. Retrieved literature includes epidemiological and physiological evidence supporting the association between mineral deficiencies (calcium, magnesium, potassium) and elevated blood pressure or hypertension risk (e.g., papers 1, 2, and 11), while clinical intervention trials like paper 0 demonstrate the limitations of supplementation alone in treating mild hypertension. On balance, the evidence supports the association described in the etiology of hypertension.