We’ve noticed that supplement companies are adding green tea to their formulations and wondered if there was any scientific basis to it. We found 1 study done in 2002 claiming that it was helpful in preventing cartilage degradation. The scientists immersed cartilage in a control solution and a solution of catechins extracted from green tea and found that cartilage exposed to catechin degraded less.
A more recent study found that that it decreased inflammation markers found in patients suffering from rheumatoid arthritis.
Green tea has powerful antioxidant compounds called catechin, gallaogatechin, epicatechin, epigallocatechin, epicatechin gallate, and apigallocatechin gallate (also known as EGCG). EGCG is the most studied polyphenol component in green tea and the most active.
Sources:
https://www.umm.edu/altmed/articles/green-tea-000255.htm
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