Do women really need all those prenatal vitamins?

New research suggests certain supplements are a waste of money

From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fnews%2Fprenatal-vitamins-study-questions-effectiveness%2F&key=ddaed8f51db7bb1330a6f6de768a69b8