All of us are different, and while the goal is to personalize care it is impossible to ignore research that examines certain ethnic differences concerning high blood pressure. It is is these subtle differences that can help personalize treatment even more. The MESA Study (Multi Ethnic Study of Atherosclerosis) was a study that examined the levels of certain blood pressure hormones as well as the risk of developing high blood pressure in the white, black, and Hispanic populations. They noted different levels of these hormones in the different ethnic groups. In another newly released study from the journal Hypertension, it looks at the levels of renin and aldosterone levels in black males. Levels of renin and aldosterone can be lower in black males according to this study. In addition, black males and Hispanic males seem to be more sensitive to the actions of aldosterone if you look at the results of these two studies. I am going to talk about the potential implications of this in a future blog post, but it is first important to understand what these levels mean and how health professionals may use these levels clinically.