Pu-erh tea has been validated to have significant anti-oxidative effects, reducing serum MDA levels and increasing serum SOD and GSH-Px levels.
The methodology used in this study involved a systematic literature review and meta-analysis to explore the anti-oxidative effects of pu-erh tea. Seven databases were meticulously searched up to the date of 21 February 2020, using the specific keywords 'pu-erh' in combination with 'superoxide dismutase', 'glutathione peroxidase', or 'malondialdehyde'.
The results from the meta-analysis demonstrated significant effects of pu-erh tea on anti-oxidation. It was found to reduce serum MDA levels whilst simultaneously increasing serum SOD and GSH-Px levels. Through the systematic review and meta-analyses, it was validated that various ingredients in pu-erh tea extracts do indeed have the anti-oxidation effects that have long been part of conventional wisdom, but until now had limited supporting evidence.