Pregnancy, however, falls
comfortably into none of the usual definitions of disease: it is not a state inimical to the way one is supposed to feel; it is not a condition in which body components and systems are acting inharmoniously (to the contrary, infertility would more likely fall within that definition); it is not a state of abnormality — for the pregnant woman functions satisfactorily within
society, and the social and physical environment tolerates the pregnant woman perfectly.