Nursing and Non-Nursing TheoryThe health belief model is a nursing theory that is commonly used in health promotion and patient education. It is made up of three constructs which are; modifying factors such as age gender or ethnicity, individual beliefs which are perceived susceptibility, perceived severity, perceived benefits, perceived barriers and self-efficacy and lastly, action which involves individual behaviors or cues to action (Ghaffari, Rakhshanderou, Safari-Moradabadi & Asri, 2018, p.89). According to this model, people might perceive that they are susceptible to an illness (perceived susceptibility) and believe that this illness can be potentially dangerous to them. They also believe that the disease has negative consequences (perceived severity) and that by taking action, they can reduce the effects of this disease. By doing these actions, there are perceived benefits that outweigh the lack of not taking action (perceived barriers). Once they overcome the perceived barriers they achieve self efficacy (Ghaffari, Rakhshanderou, Safari-Moradabadi & Asri, 2018, p.89).Non-nursing, shared or borrowed theories are those that have been developed from other disciplines that have not adapted to the practice of nursing. Nursing is a professional discipline that is both a science and art. The science deals with theories and research while the