2011年nih.gov上一篇关于高血压的文章的关键一段

For individuals over 50, the mortality rate began to significantly increase at a SBP ≥140 independent of DBP. In individuals ≤50 years of age, the situation was reversed; DBP was the more important predictor of mortality. Using these data to redefine a normal blood pressure as one that does not confer an increased mortality risk would reduce the number of American adults currently labeled as abnormal by about 100 million.

十几万人的统计。

简单地说，50岁以上的人更应该关注收缩压，50岁以下的人更应该关注舒张压。如果50岁以上的人只有收缩压太高才是会增加死亡风险的高血压，50岁以下的人只有舒张压太高才是真正的会增加死亡风险高血压，那被贴上高血压标签的美国人会减少一亿！