Abstract
Genetically linked abnormalities, such as Tay-Sachs disease, Friedreich's ataxia, thalassemia, hemophilia and sickle-cell anemia, have not figured prominently in public-health programming. Other than genetic counseling to eliminate carrier interbreeding, there is little preventive scope. In contrast, early detection of genetically linked conditions, such as old-age diabetes or coronary disease, may be followed by control of the condition and improvement in the patient's life expectancy and vigor. Recently, public-health departments have been expected to respond to the needs of the citizen that cannot be met by preventive technics or by manipulation of the environment.The causes, effects, detection and treatment of . . .