Research
Energy balance
Glutamine serves as a major energy substrate for immune cells and is required for lymphocyte proliferation and glutathione synthesis.
Your immune cells rely on glutamine for energy. While your body makes some, severe stress or illness can deplete it. Ensuring adequate protein intake supports this natural production.
StrongSupportsVERY_HIGH confidence
As a major energy substrate for cells of the immune system... glutamine plays an important role in their function and homeostasis.
Why this rating
Well-established mechanism cited extensively.
Source
Amino acids and immune function
Peng Li et al. · British Journal Of Nutrition · 2007
DOI 10.1017/s000711450769936x
narrative_reviewCited 1,567×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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