Share on PinterestScientists are beginning to understand why caffeine protects against heart disease. Roland Beerli/Getty Images A recent study uncovered how caffeine reduces the risk of cardiovascular disease. Researchers found that caffeine lowers blood proprotein convertase subtilisin/kexin type 9 (PCSK9) levels, which, in turn, lowers “bad” cholesterol, or low-density lipoprotein […]