Just as black tea is made by processing green tea leaves from
their original state, ordinary coffee is made by roasting green
coffee beans. This processing alters the chemical makeup of the
plant product. In an analogy to the medicinal study of green
tea, an extract made from green coffee beans is undergoing
increasing investigation as a possible health-promoting
supplement. Like green tea, green coffee bean extracts (GCBE)
contains strong in the polyphenol family. The primary polyphenol
antioxidants in green coffee bean extract are in a family known
as chlorogenic acids (CGA). Meaningful, if still preliminary,
evidence hints that CGA may help reduce blood pressure. Other
proposed uses of GCBE are based primarily on its caffeine
content, as well as of ordinary coffee consumption and the
possible health benefits of antioxidants in general. Animal
studies have found evidence that chlorogenic acids from green
coffee bean extract can reduce blood pressure.1 Based on this,
researchers have conducted human trials.