Seattle Times Reports that Sunglasses Can Limit Cold Sore Outbreaks

A link was believed to be found between the common herpes outbreak and sunlight entering the retina.  The American Journal of Epidemiology reported the results of a Herpetic Eye Disease Study.  The study showed that exposure to ultraviolet (UV) radiation was linked to an outbreak.

In an attempt to reduce cold sore outbreaks, many lip balms contain UV blocking agents.

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