New research published in the journal Hypertension suggests that teenage boys who have normal blood pressure are three to four times more likely to develop hypertension in early adulthood than their female counterparts. A systolic blood pressure of 120 or under is considered normal for teens, and investigators found that the rate of progression to hypertension is higher in all teens whose systolic blood pressure is 110 or over compared to those whose systolic blood pressure is 100....