The state of the national economy has a profound effect on career interests and the choices of prospective job seekers. This is reflected in part by the variation in the number of people seeking admission to vocational schools, colleges, universities, and professional schools at different periods in time. The variable economic cycle also influences, to some extent, those considering health-care careers. Nevertheless, the aging population has greatly increased the demand for professionals and paraprofessionals in the health-care field. Some areas, such as nursing, have a much greater need for employees than others. But overall this demand for competent and well-trained people, directly or indirectly involved in health care,.