In further studies conducted by Dr. Norman K. Hollenberg, professor of medicine at Brigham and Women's Hospital and Harvard Medical School found that flavonols may also help vessels dilate and help keep platelets from clustering on the blood vessel walls.
Ved senere undersøgelser fandt dr. Norman K. Hollenberg, professor i medicin på Brigham and Women's Hospital and Harvard Medical School, ud af, at flavnoider også kan hjælpe karrene med at udvide sig og hjælpe med at få blodpladerne til klynge sig sammen på blodkarsvæggene.