You will have studied one of the following disorders: - anorexia nervosa - Obsessive-compulsive disorder - unipolar depression - AQA - A-Level Psychology - Question 5 - 2018 - Paper 2

One biological explanation for anorexia nervosa is the role of neurotransmitters, particularly serotonin. Research suggests that individuals with anorexia often have atypical levels of serotonin, which can influence mood, appetite, and cognition.

Impact of Serotonin

Serotonin is important for regulating mood and feeding behavior. Low levels of serotonin are associated with increased impulsivity and mood disorders, which may contribute to the development of an eating disorder like anorexia.

Genetic Factors

Moreover, genetic predisposition also plays a crucial role. Studies indicate that familial patterns of anorexia suggest a heritable component, implicating genetic factors in its onset.

Evaluation

While biological explanations provide a basis for understanding the disorder, they should not be viewed in isolation. Psychological and environmental factors are equally important. For instance, societal pressures and personal experiences can interact with biological factors to exacerbate the condition. Thus, a more holistic approach that incorporates both biological and psychological aspects may offer a better understanding of anorexia nervosa.