PTH and osteoporosis: Stable levels of PTH form a physiological component of calcium homeostasis, whereby PTH is secreted in a continuous fashion to stimulate RANKL‐induced osteoclast formation; conversely, intermittent peaks of PTH, such as seen in PTH treatment of osteoporosis, exerts a potent anabolic effect that relies on both bone formation and bone resorption.(41, 42)