目的:探讨 VB_(12)缺乏的预防、治疗及其医疗保健作用;方法:查阅资料对 VB_(12)缺乏的症状、因素、预防及医疗保健作用,作一初步总结;结果:VB_(12)的缺乏可造成许多疾病,对人类健康和疾病有很大影响;结论:VB_(12)的缺乏可预防和治疗,而且 VB_(12)具有广泛的医疗保健作用。 OBJECTIVE: To investigate the preventive and therapeutic effects of VB_ (12) and its medical and health effects. Methods: According to the data, the symptoms, factors, prevention and health care effects of VB_ (12) The deficiency can cause a lot of diseases, which have a great impact on human health and disease. Conclusion: The lack of prevention and treatment of VB_ (12), and VB_ (12) have a wide range of health care effects.