DEAR DR. ROACH: I have been confused about what normal blood pressure is for me (or anyone). I know there is some debate on what normal is today, but let us say that normal is 120/80 mm Hg. Does this mean that 110/90 mm Hg, 130/70 mm Hg, or 150/50 mm Hg is also normal? Is there any significance of the ratio between systolic and diastolic blood pressure? -- L.P.
ANSWER: Because so many people have h…