10.41 Riboflavin Functions Nutrition Riboflavin Deficiency and Apoptosis: A Review The Journal of Nutrition Elemental Selenium and Vitamin B2 (riboflavin) are essential for glutathione use and recycling. Selenium is really low in Australian soils, and people are commonly deficient. Signs of low B2 are blood Elevated glutathione levels may reflect an accumulation resulting from impaired recycling, often due to deficiencies in NADPH, selenium, or riboflavin (vitamin B2). This indicates a disruption in the redox balance rather than Glutathione Reductase an overview ScienceDirect Topics Riboflavin1 Basicmedical Key