“…The following variables were forced into the model one at a time, but their inclusion did not affect the relationship between coronary flow reserve Յ2.5 and PTH: sex, time from diagnosis, current smoking, history of diabetes mellitus, and use of statins or nitrates. mortality in PHPT 2 but also in secondary hyperparathyroidism (SHPT), 7,17 in which PTH is secreted by parathyroid glands, seeking to restore the dyshomeostasis of essential cations (ie, hypocalcemia and hypomagnesemia), in conditions like chronic renal failure, 18 low renin hypertension, 19 primary aldosteronism, 20 heart failure, 10,21,22 and vitamin D deficiency. 7,17,23 The latter is particularly common among women and the elderly, in whom lactose intolerance and reduced dietary Ca 2ϩ may be also contributory.…”