 [ Symptoms ] i have tooth decay and many fillings from years ago can tooth whitening help or will it make my teeth look worse [ Disease ] it is too early to tell this study did show that higher levels of trimethylamine n oxide tmao are associated with increased heart disease risk and yes dietary choline found in eggs and meat is metabolized into tmao but this does not prove cause and effect and they do not know if lowering tmao will lower heart disease risk also there are other dietary factors that should be looked at such as the consumption of fermented foods probiotics and prebiotics which promote beneficial bacteria whenever there is preliminary research like this more studies are needed to confirm a relationship it is too soon to make a recommendation that people avoid choline rich foods like eggs do not forget there are other sources of choline such as wheat germ and broccoli in addition to animal products for more on this study see this link and for more about choline click here