2011年nih.gov上一篇關於高血壓的文章的關鍵一段

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.

十幾萬人的統計。

簡單地說，50歲以上的人更應該關注收縮壓，50歲以下的人更應該關注舒張壓。如果50歲以上的人隻有收縮壓太高才是會增加死亡風險的高血壓，50歲以下的人隻有舒張壓太高才是真正的會增加死亡風險高血壓，那被貼上高血壓標簽的美國人會減少一億！