A new study suggests that a common amino acid may have a greater role in immune defense than previously recognized. The nutrient is found in protein-rich foods and is also available in over-the-counter supplements.
Researchers found that low levels of the amino acid may make it easier for cancer and viral infections to avoid detection or control by the immune system. The finding points to a possible connection between nutrient availability and the body’s ability to respond to disease.
The research also raises the possibility that restoring the amino acid through diet or supplementation could strengthen immune activity. However, the study describes a potential approach rather than established treatment guidance, and further research will be needed to assess its impact in people.
The findings add to growing scientific interest in how nutrition affects immune responses during cancer and viral infections.
