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Should there be a recommended daily intake of friendly microbes, often found in foods such as kimchi and yogurt? For the first time, scientists have measured the amount of friendly microbes in the food Americans eat.

Should there be a recommended daily intake of friendly microbes, often found in foods such as kimchi and yogurt? For the first time, scientists have measured the amount of friendly microbes in the food Americans eat. (Mariah Mier/UC Davis)