Final answer:
Food advertisements contribute to obesity by promoting high-calorie fast-food consumption, encouraging sedentary lifestyles, and normalizing large portion sizes, leading to increased calorie intake and obesity.
Step-by-step explanation:
The cause-and-effect relationship between food advertisements in the media and increasing obesity levels among Americans of all ages can be associated with several factors. Food advertisements often promote processed foods high in sugar and fat, contributing to poor nutritional choices. The Let's Move! campaign emphasizes the importance of physical activity alongside a healthy diet to combat obesity.
Therefore, while the deteriorating quality of food plays a role, the interplay of increased fast-food consumption, sedentary lifestyles, and larger portion sizes as advertised in the media have a more direct impact on the escalating obesity rates.