Improving Your Natural Killer (NK) Cell Function:
Your Immune System's Frontline Warriors Against Cancer

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

Natural Killer (NK) cells are a vital component of our innate immune system, acting as the body's first line of defense against cancerous and virally infected cells.[i] Unlike other immune cells, NK cells can recognize and eliminate abnormal cells without prior sensitization, making them crucial in the early detection and control of tumors.[ii]

Natural Killer (NK) cells are a special kind of white blood cell that belongs to a group called lymphocytes, which help defend your body. They make up about 5–15% of your lymphocytes in the bloodstream[iii]. Unlike other immune cells like T cells and B cells, which need to “learn” what to attack, NK cells are part of your body’s fast-acting, built-in defense system. They can quickly recognize and attack vi...