Cutting glutamine starves the tumor's second fuel; EGCG from green tea blocks the enzyme glutamate dehydrogenase and so blocks glutamine use.

Glutamine addiction is real, a live pharma target; EGCG inhibits glutamate dehydrogenase in cells.

No human trial has shown green tea, EGCG, or dietary glutamine restriction changes a cancer outcome.

Targeting glutamine metabolism as a potential target for cancer treatment, PMC 2025, An alternative mechanism of glutamate dehydrogenase inhibition by EGCG, PMC 2025, Targeting cancer hallmarks with EGCG, PMC 2024