In the overall sample, low BMD was more prevalent in older individuals (p < 0.001), with lower BMI (p = 0.001), previous fracture (p < 0.001), greater number of fractures (p < 0.001), use of vitamin D (p < 0.001), calcium intake (p < 0.001), use of antiresorptive drugs (p < 0.001), previous diagnosis of osteopenia (p = 0.014) or osteoporosis (p < 0.001), hyperparathyroidism (p = 0.002), dyslipidemia (p = 0.005), and higher PTH levels (p = 0.002). This evidence concerns the gene PTH and hyperparathyroidism.