A 'healthy' person...hmmm, can you define that? Do you mean someone who isn't obviously sick? Do you mean someone whose vital signs are acceptable?

I think that people who are considering suppliments are looking to be a bit more than merely healthy.

There are different grades, forms and qualities of suppliments. There are bio-availability issues and yes, you can't take just one suppliment without taking a host of others to work in synery with that suppliment.

I used to race bicycles and I was deep into mega-vitamin therapy. Our team physician took regular readings via hair analysis, blood and urine tests to make sure that the supplimental nutrients were getting to where they were most needed and in the proper amounts and combinations.

"Balanced diet!" The FDA allows stuff that shouldn't even be labelled food to be called health food. Processed food is so far away from raw natural food that it's a wonder most of us aren't more sickly than we are.

If you work out hard, you need more vitamins and minerals... unless you want to merely be 'healthy'... Unless you've got scientific evidence against supplimentation, you are merely stating an opinion. Yes, eating ramdom vitamins can be a waste of time and $, but doing it right is a whole different story. Why do the many top athletes take suppliments?