Vitamin Supplements: What are the Benefits and Risks?

I need some one to answer these that I will post below. Please, You must write 400-500 words.

1. What are the arguments in favor of taking supplements? Who really need them?
2. What are the arguments against taking supplements? Who are at risk of toxicities, and related problems?
3. When choosing a supplement, is comparing the labels of two supplements at the grocery store an effective way to choose a supplement? Why or why not?
4. Application: do you or, someone close to you take supplements? What is your experience or, the experience of someone you know with taking supplements? Do they help? Please share with the group the experience, or, your own opinion after reading the content of this controversy.