the emerge of the dietary supplement industry

the emerge of the dietary supplement industry Order Description 1) touch on its effect on health and the reasons behind the wide use of food supplements by athletes and ordinary people 2) Please focus on the economical aspects of the topic (who and why is the industry so popular and became a multibillion dollar industry ?) 3) also please talk about the regulation or the lack of it on the food supplement industry.(especially in the USA)

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