Does beta-carotene cause cancer? Will vitamin B6 damage the nerves? Can calcium weaken the kidneys? These were some of the unsettling questions raised by a story on the front page of the New York Times last week that had vitamin takers across the U.S. wondering if they--or their children--were swallowing too much of a good thing.
It has long been an article of faith among health-conscious Americans that extra doses of vitamin and mineral supplements can cover a multitude of dietary sins. So it seemed like heresy last week when Jane Brody, the Times' respected health columnist, questioned the value of...
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