PTH and type 2 diabetes mellitus: Contrastingly, earlier studies reported no correlation between MFF and bone turnover biomarkers—including the N-terminal propeptide of type 1 procollagen, parathyroid hormone, β-type I collagen telopeptides, and osteocalcin—in populations such as postmenopausal healthy women, individuals with chronic kidney disease, and those with type 2 diabetes (38–41).