Female patients with a vitamin D deficiency had a higher BMI (mean BMI 28.2 kg/m2 Vs 26.1 kg/m2; p = 0.03), had more often hypertension (56.0% Vs 28.1%; p = 0.007), a significantly lower mean serum concentration corrected calcium (2.34 mmol/L Vs 2.38 mmol/L; p = 0.04) and higher mean serum PTH (6.6 pmol/L Vs 4.5 pmol/L; p = 0.04). This evidence concerns the gene PTH and vitamin D deficiency.