For instance, this article is about study findings that green tea "could help protect against the damage caused by heart attacks and strokes".
According to this study, conducted by the U.K.'s Institute of Child Health, the antioxidant epigallocatechin-3-gallate (EGCG) can "reduce cell death after a heart attack or stroke." (Incidentally, green tea contains more EGCG than any other type of tea.)
EGCG does this by suppressing the action of the protein Stat1, which induces cells death after a stressful even—such as a heart attack or stroke. Reduced cell death during and after a heart attack means a faster recovery and less-severe long-term damage.
Read the full account here.