A new study reveals that the fibroblasts in tissue surrounding acne infections play an active role in the body’s immune response—and that existing treatments help trigger them to do so.

University of Michigan’s Ada Hagan separates fact from fiction, such as whether you should starve a fever or if eating chocolate really causes acne.

Some Propionibacterium acnes strains may help prevent pimples.

Common acne treatments aren’t backed by sufficient comparative studies on their safety and efficacy.