The sport-related issue that will be addressed throughout this essay is a major and ever-growing problem, namely obesity. What obesity actually is is a state of being overweight due to lack of physical activity and fitness. Later in this essay there will be a discussion of the number of key issues that revolve around obesity in relation to the three main theoretical perspectives, namely: sociology, psychology and physiology. Additionally, with these three different theoretical perspectives, an overview of research methods will be used to create a more in-depth investigation and supporting evidence will be presented for each of the perspectives. Throughout this essay, different researchers will also present a discussion on how obesity can be studied in more detail. Supporting evidence will also be used throughout this essay in order to display different viewpoints from different researchers who have different opinions and perspectives on the topic of obesity, relating to sociology, psychology and physiology. As mentioned previously in the introduction, obesity is the state of being overweight due to lack of physical exercise, it is a major problem related to sports because it is something that gets worse. To support the true scale of obesity in the UK, a quote from the Guardian states that "67% of men and 57% of women in the UK are overweight or obese according to the study which uses an index of body mass”. (Guardian, 2014). It's not just women who are a growing problem in the UK. Much of the obesity in the UK also affects children and adolescents. Another quote from the Guardian 2014 which supports this claim that children and adolescents are becoming increasingly obese...... middle of article...... (Children Obesity Guide, 2014). When it comes to obesity, there are different factors that revolve around obesity. When you are classified as obese, it can trigger serious and life-threatening conditions. Some examples of conditions include: Type 2 diabetes, heart disease, different types of cancers and strokes. In the worst cases, obesity can also lead to death (NHS 2014). Once you are classified as obese, it can then be difficult to try to shift the weight away from being obese. However, there are different ways to prevent obesity and perhaps get rid of unwanted fat. Some examples are: join a local weight loss group, practice different activities such as walking and swimming (around 150-300 minutes per week) and finally adopt a healthy and balanced diet which might be suggested to you by your GP to offer you an effective eating plan..