Current Opinion in Clinical Nutrition and Metabolic Care
PURPOSE OF REVIEW: Tea and coffee, after water, are the most commonly consumed beverages in the world and are the top sources of caffeine and antioxidant polyphenols in the American diet. The purpose of this review is to assess the health effects of chronic tea and/or coffee consumption. RECENT FINDINGS: Tea consumption, especially green tea, is associated with significantly reduced risks for stroke, diabetes and depression, and improved levels of glucose, cholesterol, abdominal obesity and blood pressure.
The current clinical research system does not produce high-quality evidence quickly enough to support health care decision making. The Patient-Centered Outcomes Research Network (PCORnet) embodies a novel strategy for creating a national "network of networks" that is capable of significantly accelerating evidence generation to support a learning health system.