High Blood Pressure Dulls Emotions Elevated levels smooth out highs and lows, study says    HealthDayNews -- Higher blood pressure may dull a person's emotional response, smoothing out emotional highs and lows, says a study in the current issue of Psychosomatic Medicine.    Clemson University researchers checked the blood pressure of 65 volunteers and then showed them a series of photographs meant to elicit either a positive or negative emotional response...