Why are Americans willing to pay so much money for books, diet plans, and special foods

Part1.For the past few years I have seen an increasing number of people who carry water with them and are constantly drinking water. Is this a good idea or not? Do you think that most of these people are actually in danger of dehydration? Do you think that such water consumption puts a significant number of these people in danger of water intoxication? Explain your answers
Part2.Why are Americans willing to pay so much money for books, diet plans, and special foods when the actual keys to maintaining a healthy weight are so simple?
Part 3Should athletes be allowed to compete if they have used performance-enhancing supplements such as anabolic steroids? Explain your answer.