How is epidemiology of HTN?

HTN doubles risk of CVD (CHD, CHF, strokes, renal failure and periperal arterial diseases) HTN increases with age 65% age >60 years. Obesity and weight gain are strong independent risk factors to get HTN (60% HTN are 20% overweight), prevalence related to NaCl intake, low intake of Ca and K contributes to HTN, others (alcohol, psychosocial status, physical inactivity) Blood pressure heritability is 15-35% high blood pressure before 55 occurs 3.7 times more if we have + fam hx