Final answer:
Meditation is an appropriate nonmedical CAM therapy for stress, known for reducing sympathetic arousal, and improving overall mental health.
Step-by-step explanation:
When an acquaintance of a nurse seeks a nonmedical approach for managing excessive worry and work stress, one appropriate CAM (Complementary and Alternative Medicine) therapy that can be recommended is meditation. Meditation is a stress reduction technique that has been shown to be effective in reducing sympathetic arousal, with benefits such as lowering blood pressure, improving sleep quality, and aiding in the management of mood and anxiety disorders. Unlike other practices such as chiropractic therapy focused on musculoskeletal issues, or acupuncture and ayurvedic herbs that are more medically-oriented, meditation is a simple and accessible practice that can be easily incorporated into one's lifestyle for stress management.