Can taking too many nutritional supplements be bad for you?

I read the following on the internet:

"Almost daily, I see people placing themselves at increased health risk from supplement excess; too much Vitamin A, too much B6, too much beta carotene, too much iron, too much selenium, too much fish oil, too many herbal concoctions and laxatives (called bowel cleansers). People can easily hurt themselves with too much supplementation. We want to supplement intelligently and not incur the risks of excessive nutrients. With many nutrients, too much can be just as bad as too little."

There are no specifics here- what are the guidelines. Has anyone set them- is there a link out there?

Fri. Aug 17, 1:15pm

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