An EU agency has dismissed general health claims of probiotic drinks and yogurts, saying they were not backed by science.
CBC News - Consumer Life - Probiotic health claims unsupported: EU
I have a friend who ate a spoonful of baker's yeast one time because some dolt told her it would aid her digestion. I was almost ready to call an ambulance to scoot her to the horsespittle and have her tummy pumped. She was in agony. She woofed her cookies though, it helped immensely. People shouldn't tell kids these things. And others should check first on these things.