In a randomized crossover study , 13 women and 6 men [ mean SEM age : 61 2 y ; BMI ( in kg/m ) : 31.2 1.4 ] with elevated BP [ systolic blood pressure ( SBP ) / diastolic blood pressure ( DBP ) : 130 2/85 2 mm Hg ] consumed a DASH-style diet for two 6-wk controlled dietary interventions ( with a 4-wk diet washout between interventions ) with either lean pork [ DASH diet with pork ( DASH-P ) ] or chicken and fish [ DASH diet with chicken and fish ( DASH-CF ) , the control diet ] as the major protein source ( 55 % of total protein intake ) .