How T‑cells detect and destroy cancer cells, how immunotherapy strengthens them, and what lifestyle, nutrition, supplements, and repurposed medications may support healthy T‑cell function.

Researched and written by Keith Bishop, Integrative Cancer Educator, Cancer Coach, Clinical Nutritionist, Retired Pharmacist, and Founder of Prevail Over Cancer.

Why T‑Cells Matter More Than Ever in Cancer Defense

Over the last decade, T‑cells have become the centerpiece of modern cancer treatment. Immunotherapies such as checkpoint inhibitors, CAR T therapy, and cancer vaccines all work by activating or enhancing T cell function. This is because T‑cells are the immune system’s precision-guided assassins, capable of identifying and destroying cancer cells with extraordinary specificity.

A central review on T cells and cancer immunology emphasizes that T cells are the primary drivers of antitumor immunity, orchestrating both direct killing and broader immune coordination.[i] Without effective T‑ce...