New research shows light changes how immune systems interact with bacteria

Researchers at the Francis Crick Institute published a study in *Nature* showing how light exposure can influence the immune system's response to bacterial infections. The team, led by Dr. Laura O'Connell, discovered that certain immune cells, specifically macrophages, become more efficient at clearing bacteria when exposed to specific wavelengths of light. This mechanism suggests a direct link between light, immune regulation, and inflammation.