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Brain fog and difficulty concentrating 5

This concern likely originates from confusion with unrelated skin-lightening injection practices or from misinterpreted research on glutathione's complex role in cancer cell biology, which is a separate scientific question from oral supplementation

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It upregulates key glycolytic enzymes (HK2, PKM2) and vascular endothelial growth factor (VEGF), promoting vascular remodeling and alveolar space enlargement, while inhibiting the proliferation and repair of alveolar epithelial cells ( 4.3 Small airway disease Small airway disease, however, serves as the primary pathological driver of airflow limitation in COPD