While Barnard comments on anecdotal evidence relating to several cases in which data derived from animal experiments were not applicable to human clinical situations, he completely misses critical points. For example according to the Pharmaceutical Manufacturers Association, each year approximately 5,000 new chemical entities are synthesized. Of these 5,000 new chemical entities, 500 are tested in isolated systems, 250 are tested in animals, five are tested in human clinical studies, and only one is ultimately approved by the Food and Drug Administration. Obviously, the important lesson in these data is the protection afforded to society by these rigorous testing processes. At issue is not what we have failed to learn but rather what we have learned.
We must all beware of pronouncements made by an individual whose scientific acumen is driven by personal philosophy that ignores valid research data.
JEROD M. LOEB American Medical Association 515 N. State Street Chicago, ...
