- By Dana Sparks
Join the @USNewsHealth Twitter Chat on #vitamins
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More than 110 million Americans use vitamins and dietary supplements each year. But research is unclear on whether these help or hurt our bodies. U.S. News is teaming with leading experts to explore topics like: Which vitamins and supplements are important for women, and why? What about for men, children and seniors? What are risks involved with taking vitamins and supplements?