http://articles.mercola.com/sites/articles/archive/2006/03/23/coffees-risk-to-your-heart-depends-upon-your-metabolism.aspxPeople who have a genetic trait that makes them slow caffeine metabolizers have a higher risk of heart attack associated with drinking coffee. Metabolized Rapidly or Slowly A study of more than 4,000 people showed that about half had a genetic factorenCommunityServer 2008.5 SP1 (Build: 31106.3070)