with the technical assistance of DEAN SURBEY, M.A.SUMMARY To assess the effects of modifying dietary sodium intake, 80 school children with blood pressures abore the 95th percentile for age and sex but below 130/90 mm Hg at school screening were randomized to a family intervention program or a control group. Twenty children aged 6 to 9 years and their families began a program to modify the family diet toward a goal of 70 mEq sodium per person per day. Adherence was assessed by 3-day food records and urine collections in children and adults. The sodium intakes and blood pressures of the interrention and control group were compared 1 year after randomization. Sodium intake was significantly lower in the intervention group only in the actire participants as compared to dropouts and controls (87 vs 130 and 133 mmoles/24 hr). There were no significant differences between the groups in height, weight, or blood pressure. 1 Risk factors in youth for essential hypertension in adulthood have been identified in epidemiologic studies." Higher blood pressure (BP), body weight, and ponderal index at baseline, weight gain over the follow-up period, and family history of hypertension are the best established of these. Although data from follow-up studies reaching from early childhood to adulthood are lacking, the "tracking" of BP, weight, and other characteristics through childhood and adolescence has been well documented.7 -* Crosscultural, clinical, and laboratory studies support the hypothesis that a high sodium intake, to which essentially all American children are exposed, is a risk factor for essential hypertension in adulthood.' Hygienic measures have proven valuable in the management of