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In the case of discrepancies in the selected studies, we opted for reconciliation through team discussion

Environmental factors like pH, temperature, and other ingredients can potentially interfere with these conversions, partly explaining why retinol can be sensitive to certain ingredient combinations

Cinnamon, cardamom, and turmeric also work, as do pretty much any foods that contain sulfur

This work was supported by the Beijing Natural Science Foundation (7232126), a Special scientific research project of the Beijing Critical Care Ultrasound Research Association (2023-CCUSG-A-03), and the Medical health research project of Yichang (A24-2-011)