Living in the 19th, 20th and 21st Centuries there would have a very different diagnosis for many different diseases; for example, Arthritis. In the 19th Century it would 've been diagnosed through the cellular theory and later one distinguished through the germ theory. As time and medicine transformed into the 20th Centuries there would 've been test ran through the Biomedical model, which assumed the disease was a result of a pathogen that invaded the body; other ways in the 20th century the researchers/doctors would 've been able to distinguish the disease would 've been through the upcoming discovery of Behavioral Medicine in the early 1970s. In the 21st Century, Modern Medicine would be able to give the patient any diagnosis in a matter of hours with a few diagnostic tests ran through a local hospital or primary doctor. The development of medicine has really been amazing and reading it though the text and not only just seeing it firsthand but it gives the reader a better sense of where health psychology and care has been and the different stages it has gone through and will go through in the future as medicine continues to…