I have seen how our previous generations depended on vitamins most of the time. They would start with, give your kids multi-vitamins, it is good for their growth, then, they would proceed to, why dont you take some supplements for your healthy bones, and beautiful hair? And then they would go on with, I need to take so-and-so vitamin to stay fit because I am growing old. Taking vitamin never ceases. But the question is, are all vitamins safe for us? What does science say?