However, studies have yet to reveal exactly how probiotics might help prevent eczema and which 'friendly bacteria' work best.

无论怎样，研究已经正确揭示了益生菌是怎样可能帮助防止湿疹的并且哪个“友好的细菌”起到最好的作用。

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Probiotics are often called 'friendly bacteria' because they help with digestion and protect against some types of harmful bacteria.

益生菌通常被称作“友好的细菌”是因为他们有助于消化并阻止一些有害细菌的侵入。

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Lactic Acid and Friendly Bacteria: Contribute to the health of the digestive tract. Found in old fashioned lacto-fermented foods.

乳酸和益生菌：乳酸和益生菌对机体的消化系统非常有益，它们能够在传统的发酵性食品中获得。

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In January, scientists said they had hard evidence that foods containing "friendly bacteria" did have a tangible effect on the body.

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While the association between so-called "friendly bacteria", and redued allergy, has been noted before, no-one is sure why they should have such an effect.

BBC: Live bacteria 'could prevent allergy'