AI Summary

Scientists at UC San Francisco discovered that a short high‑fat diet can alter the immune response in mice. After only a few days on the high‑fat diet, the mice showed a much stronger reaction to an irritating cream applied to their skin. Even after the mice were switched back to a low‑fat diet and the initial inflammation resolved, their skin remained primed for a heightened response. When the cream was reapplied, the mice reacted more intensely than before the dietary change. The study suggests that brief dietary shifts can have lasting effects on skin immunity.

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