Immunotherapy Unlocks the Immune System’s Cancer-Fighting Power

Lessons from immunotherapy show the importance of lifestyle factors in fighting cancer from the inside out.

Chimeric antigen receptor (CAR) T-cell therapy modifies T cells so they are able to fight cancer cells. Alpha Tauri 3D Graphics/Shutterstock

Twice, Jim Mann survived aggressive melanoma, which quickly kills most people.

Surgery in 2016 to remove a large spot on his head—along with lymph nodes, some under his skull—was sufficient to put Mann into remission, surprising doctors who had expected to find the cancer had spread throughout his body.