It’s a health trend that appears to be commercially contagious. Found in baby food, yogurts, snack bars and cereals, probiotics — “friendly” bacteria similar to those found in the human digestive system — are selling well. Experts say they’re generally safe, and in some cases actually helpful. However, more research is needed. This week, top scientists will discuss recent advances at a National Institutes of Health conference. But you don’t have to wait for them. Do some research of your own with an introduction to probiotics.
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