Risk factors for disease consist of personal habits such as cigarette smoking and excessive alcohol consumption, and bodily characteristics such as hypertension and high serum cholesterol. Progress in identifying, quantifying, and controlling risk factors is opening the way to the prevention of disease. (BB)

Reports that amphetamine given to normal boys resulted in a marked decrease in motor activity and reaction time, and improved performance on cognitive test, a response similar to those observed in hyperactive children. (SL)

This is a discussion of preventive medicine. Included is a historical background, a discussion of improving the environment, moderating self-imposed risks, changing consumer expectations, recommendations, and conclusions. (BB)

Discussed are concerns about chiropractic practice and the impact of some legislation related to Medicare, accreditation, and research about chiropractic practice. (RH)

Examines the validity of the concept that the interaction of a single pollutant molecule with a cellular substance is necessarily associated with a deleterious result. Argues that such a no threshold" position is untenable. (AL)

Some results of the skylab missions and ways in which man has optimized the scientific return are discussed. (Author/RH)

Discusses the report of the National Academy of Science Committee on the Biological Effects of Ionizing Radiation, with particular reference to the possibilities for lowering maximum permissible standards for exposure to man-made radiation. The excessive use of diagnostic X-rays is considered. (AL)

Discusses ethical and social issues arising from the possible application of biomedical technologies providing control over life and death, human potentialities, and human achievement. Argues that "because we lack wisdom, caution is our urgent need," and proposes that systems of international control and regulation are needed. (AL)

The success of present and future immunization programs is endangered by public and physician complacency and by complex legal and ethical problems related to informed consent and responsibility for rare, vaccine-related injury. (BB)

New systems for analyzing large numbers of body fluid components can be used in the clinical laboratory. (Author/RH)

Predicts that current National Institutes of Health research training programs for surgeons will need to be boubled if an adequate supply of scientifically trained research surgeons is to be maintained. (AL)

Describes an experimental program of health care for a Navajo community, and discusses the use of personal physician care where a para-medical referral system may have been more technologically efficient. (AL)

Outlines the main features and areas of responsibility of an international, non-governmental body proposed by the Council for International Organizations of Medical Sciences to explore the moral and social issues raised by recent and impending developments in biology and medicine. (AL)

The concentration of the primary brain metabolite of norepinephrine is diminished in the lumbar spinal fluid of patients with Korsakoff's syndrome. The extent of its reduction is correlated with measures of memory impairment. (BB)