Shimon Sakaguchi won the 2025 Nobel Prize in Medicine for research on the immune system and the prevention of serious autoimmune diseases.

American scientists Mary Brunkow and Fred Ramsdell and Shimon Sakaguchi from Japan won the 2025 Nobel Prize in Physiology or Medicine on Monday.

Shimon Sakaguchi won the 2025 Nobel Prize in Medicine for research on the immune system and the prevention of serious autoimmune diseases.