
ALT The Nobel Prize-winning discovery that could change how we fight disease What stops your immune system from turning against your own body? The answer lies in a tiny group of cells acting like peacekeepers inside you. The 2025 Nobel Prize in Physiology or Medicine was awarded to Shimon Sakaguchi, Mary E. Brunkow, and Fred Ramsdell for discoveries explaining how the immune system prevents itself from attacking healthy tissues. Their research revealed the importance of **regulatory T cells (Tregs)** and a master gene called **FOXP3**, which helps these cells develop and function. Think of them as security guards that stop your body's defense system from attacking the wrong targets. But here's where it gets even more fascinating. When this control system fails, the immune system can attack healthy organs, contributing to serious autoimmune diseases.
































