Essential hypertension is a common disorder, and a variety of antihype
rtensive drugs are available to lower blood pressure in the normal ran
ge; Identifying special subpopulations by differences in age, gender,
race, and body weight has taught clinicians to be more selective in an
tihypertensive therapy. The rationale for this selectivity is often sp
eculative and has not been corroborated by any hard data. It is hoped
that some of the prospective, randomized trials currently in progress
will throw some light on this question.