This essay will explain the definition of sociology, sociological factors of obesity using symbolic interactionism theory and functionalism theory and a description of obesity and how it can affect individuals who suffer from it.Sociology cannot be clearly explained because there are many different theories and theorists; so far none of them have been set as a correct answer. Although with all this information about theories and theorists, sociology is relatively explained as agreed-upon philosophies that give reason to human society. Sociological theories are like most other theories, they are selective and there is no amount of theory to explain everything or define the infinite amount of information that exists or understand the methods of observing reality. Sociological theories vary and can be related to each other according to various criteria. The two main perspectives of sociology are the microsociological approach and the macrosociological approach. The microsociological approach relies more on the ability of people to have their own thoughts, feelings and behaviors; society is therefore constructed through their interactions with each other and the meanings they attach to them. This approach is defined using social action theory and symbolic interactionism. The macrosociological approach is on a much larger scale and involves the birth of a person into a current society which will then shape their behavior. It focuses on the organizations, values ​​and culture of that particular society and its impact on an individual and their role in life. This approach is made clearer using functionalist, feminist and conflict theories. The health issue that will be addressed throughout this essay is obesity. There are two types of clinical obesity and morbid obesity. This trial will focus on obesity in