Cleveland Clinic researchers found a link between trimethylamine-N-oxide (TMAO) and cardiovascular disease.
TMAO is produced when you digest choline (found in red meat, eggs and dairy) Those with the highest levels of TMAO had double the risk of death from heart attack and stroke compared to others with the lowest levels.
http://www.nytimes.com/2013/04/08/he...ease.html?_r=0