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A simple supplement could help your immune system fight cancer and viral infections

A surprising discovery from Rockefeller University suggests that a common amino acid could play a powerful role in protecting against cancer and viral infections. Scientists found that low arginine levels interfere with the immune system's ability to recognize dangerous cells, while increasing arginine intake reduced colon cancer tumors and improved viral infection outcomes in mice. Even more remarkably, giving mice arginine after they contracted influenza helped them recover.

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