Final answer:
The belief that overweight is an uncontrollable characteristic has not been suggested as a source of anti-fat prejudice because it is understood that non-controllable factors like genetics or medical conditions can influence obesity.
Step-by-step explanation:
Among the beliefs held about obesity, some have been suggested as sources of anti-fat prejudice, including the belief that overweight people lack willpower and that anti-fat prejudice is rooted in culturally accepted values.
However, the belief that overweight is an uncontrollable characteristic has not been suggested as a source of anti-fat prejudice. This is because perceptions of obesity tend to be more positive when obesity is attributed to non-controllable factors such as genetics or medical conditions.
Prejudice towards overweight individuals often stems from the assumption that obesity is solely a result of personal choices about diet and exercise. The Yale Rudd Center for Food Policy and Obesity's study exposes the negative stereotypes associated with overweight individuals, such as being lazy or lacking self-discipline.
Conversely, obesity is acknowledged as a disease by health experts, and a variety of factors contribute to it, including genetics, socioeconomic status, and the environment, making it an oversimplification to blame obesity entirely on individual behavior.