In summary, hypertension is a disproportion between vascular capacity and blood volume. Only a small number of cases are secondary to specific diseases. The vast majority of patients have so-called "essential hypertension". In many cases the causative agent seems to be aldosterone, renin. Angiotensin II or other pressor agents. Psychosocial elements probably play important roles in the etiology of essential hypertension. Hypertension together with other factors are etiological of both tensive and atherosclerotic, cerebro, reno, and cardiovascular complications. Finally, industries and their workers are heavy losers to this disease, through lost wages, lost productivity and prodigious medical expenses.