New study reveals our skin's own bacteria can help protect us from the bad effects of sunlight

The skin microbiome plays an important role in health and disease. Researchers have now substantiated that certain skin bacteria can protect us from the sun's ultraviolet (UV) radiation specifically by metabolizing cis-urocanic acid using an enzyme called urocanase. This enables the skin's ability to fine-tune how it responds to UV radiation. The findings demonstrate the ability of the skin microbiome to remodel host immune functions.

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