Do we really need all these vitamins, minerals and other supplements? – The San Diego Union-Tribune

The problem with nutritional science is it isn’t really a science. It’s a mixture of science with tradition, fads and prejudices — often it’s hard to see which is which.

And human beings are notoriously hard to study. We vary by gender, race, genetics, cultural backgrounds and the physical environments in which we live, work and play.

So what should we eat, and avoid, for proper nutrition? Should we take vitamins and other dietary supplements — and if yes, what kinds?

Judging by statistics, Americans have already given their answers. About 71 percent of us take dietary supplements, according to the Council for Responsible Nutrition, a trade association for the supplements industry.

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