The study of nursing focuses on prevention of illnesses and injuries, care of patients of all ages and the promotion of health. This subject is useful for anyone who wishes to be a nurse at hospitals, clinics, assisted living centers or other health institutions.

Available at universities around the world, a PhD degree is an excellent choice for students who wish to pursue a career in academia or research. This type of degree is the highest qualification available in many fields and requires a great deal of study to obtain.