Your immune system’s first line of defense may reveal more than you think.
Dr. Leonardo Tamariz explains why natural killer (NK) cells play such an important role in complex chronic illnesses, including Gulf War Illness, ME/CFS, and Long COVID. Their ability to identify and eliminate threats—known as cytotoxicity—offers valuable insight into how effectively the immune system is functioning.
Reduced NK cell activity may help explain why immune dysfunction remains a central feature of these conditions.
Watch the full discussion on the Institute for Neuro-Immune Medicine 2026 SHIELD Conference.
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