VITAMINTESTING.COM: Test Your Vitamin Levels

          
                   
Potential Risks of Using Dietary Supplements
    
Although certain products may be helpful to some people, there may be circumstances when these products can pose unexpected risks. Many supplements contain active ingredients that can have strong effects in the body. Taking a combination of supplements, using these products together with medicine, or substituting them in place [...]

A John Hopkins Study found that taking even modest amounts of Vitamin E (400 IU per day, an amount recommended by many doctors) leads to an increased risk of death.   Likewise, high doses of beta carotene had been shown to increase the risk for lung cancer and death.
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