Final answer:
Among the given statements about differences between obesity and being overweight, all are true except that both conditions warrant monitoring of young people for health risks, not just obesity.
Step-by-step explanation:
The question asks which of the following statements is NOT a difference between obesity and being overweight. First, we must understand that obesity indicates an unhealthy amount of body fat, while being overweight means weighing more than what is considered healthy for a given height but not necessarily having an excessive amount of body fat. Secondly, obesity is indeed recognized as a disease, while being overweight is not, though it can still have health implications. Third, obesity does typically indicate a much higher amount of body fat than being overweight. Lastly, the importance of monitoring young people at risk of obesity for health risks underscores the serious health implications of obesity compared to simply being overweight.
Therefore, all the statements except for the last one (D), represent differences between obesity and being overweight. Monitoring young people who are at risk of either obesity or being overweight is important for health reasons, making it an exception to the differences listed.