高血压是全球主要的公共健康问题,包括高血压在内的心血管疾病已成为我国首要的死亡原因,高血压和高血压前期是主要的危险因素,它们显著增加了心血管疾病的病死率[1-2]。体重指数(body mass index,BMI)的升高增加了高血压、脑中风和心肌梗死等心血管疾病发病的风险,BMI与血压升高所致的心血管疾病发病风险不尽相 Hypertension is a major public health problem in the world. Cardiovascular diseases, including hypertension, have become the leading cause of death in China. Hypertension and prehypertension are major risk factors and have significantly increased the mortality rate of cardiovascular diseases [ 1-2]. The rise of body mass index (BMI) increases the risk of cardiovascular disease such as hypertension, stroke and myocardial infarction. The risk of cardiovascular disease is not always the same with BMI and high blood pressure