Nobel prize for 2025, category of medicine.

But precisely what is it that they discovered? Is it too early to use there discovery in home herbalism treatment for autoimmune issues?

They understood how the immune system is kept in check
The body’s powerful immune system must be regulated, or it may attack our own organs. Mary E. Brunkow, Fred Ramsdell and Shimon Sakaguchi are awarded the Nobel Prize in Physiology or Medicine 2025 for their groundbreaking discoveries concerning peripheral immune tolerance that prevents the immune system from harming the body. Their discoveries have laid the foundation for a new field of research and spurred the development of new treatments, for example for cancer and autoimmune diseases.
From the Nobel prize site. Full article there.

I found a video about the award the discoveries that led to it.