Vit D, which is not a vitamin, but a pro hormone (a substance turned into a hormone by sunlight) is low in the majority of Americans since we no longer eat the major food source of liver and fish liver. Add to that the use of sunblock, living indoors and fear of the sun and you...
25(OH)VitD 3 –time course. Full size image Figure 2 PTH time course. Full size image Serum values of 25(OH)D3 during fracture healing of low BMD level patients and normal BMD level patients show no significant differences. The time course of PTH also showed no significant changes in bo...
质代谢中起重要作用 ,VitD 水平下降还与肥胖及 其代谢异常密切相关。 VitD 水平下降是肥胖发生 的危险因素 ,本研究发现肥胖组25(OH)D3 水平明 显低于对照组 ,提示 VitD 水平下降与肥胖有关。 有学者认为 VitD 下降会导致肥胖 ,其机制可能为 VitD 下降继发性引起甲状旁腺激素(PTH)升高 , PTH 升高进一步引...