After COVID-19, a significant number of people develop prolonged inflammation, fatigue, brain fog, and gut problems that persist long after the infection clears. A key mechanism driving this is a glutamine deficiency triggered by the extreme inflammatory demands of COVID.
Glutamine is the most abundant amino acid in the body. Under normal conditions, production keeps pace with demand. COVID-19 is unusual in generating an inflammatory response so massive it exceeds the body's capacity to produce glutamine. The immune system consumes it faster than it can be made — the only other infection known to do this comparably is HIV.
The intestinal lining is only one cell thick. Glutamine is essential for maintaining that barrier. When severely depleted, intestinal cells begin to die — producing what Dr. Nemechek calls hyper-permeability, not ordinary leaky gut. This triggers a massive secondary wave of inflammation from the gut itself. The COVID infection resolves, but the gut damage does not automatically heal. The body is locked in a cycle: gut inflammation demands more glutamine, glutamine deficiency prevents gut healing. This cycle is a primary driver of Long COVID.
Research shows intestinal permeability can be substantially reduced with glutamine, but the dose matters — less than 30 grams per day is insufficient. The effective protocol is one level tablespoon twice per day (30 grams total) for four to six weeks. Clinical studies show measurable reductions in multiple inflammatory markers within five days. Most people report feeling substantially different within two to three weeks.
Estimates suggest up to 30% of people who have had COVID may carry residual gut damage. If you have had COVID and continue to experience fatigue, brain fog, or elevated inflammation, a six-week course of glutamine is a low-risk, evidence-supported intervention.
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Medical Disclaimer: The information in this article is for educational purposes only and is not intended as medical advice. Please consult with a qualified healthcare provider before making changes to your health regimen. Individual results vary.
