This document summarizes three weekly lectures on complementary and alternative medicine (CAM). The first lecture introduces CAM, distinguishing between complementary and alternative approaches. It covers the history of CAM and its benefits. The second lecture discusses common CAM methods and statistics on their use. It also compares CAM and modern medicine. The third lecture explores specific CAM systems like Ayurveda and homeopathy. It addresses the lack of scientific evidence for some CAM approaches.