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“Ten years ago, researchers at The Cleveland Clinic published one of the first studies proposing a link between TMAO, dietary choline, and cardiovascular disease risk,5 but have just published a new study that offers some important new information about choline from eggs, one of the best food sources of choline available. The new study published in The American Journal of Medicine explored the difference between consuming eggs, a whole food source of choline, and taking supplemental choline on TMAO production, and concluded “… it may be more prudent to recommend natural sources of choline, like eggs, over supplements.”6

In this study of healthy adults, TMAO concentrations increased from baseline to end-of-study in the participants who consumed a choline bitartrate supplement alone or in combination with whole eggs or egg whites; however, there was no change in TMAO concentrations in the participants who consumed eggs alone or for those who took supplement of phosphatidylcholine, a form of choline found in eggs.

The results of this new study from Cleveland Clinic align with other studies in healthy, young adults that have indicated higher intake of choline from eggs (2-3 eggs/day) has no impact on blood levels of TMAO.7-”