Contrary to popular opinion, egg consumption has not been shown to cause cardiovascular disease However, egg consumption might worsen parameters of cardiovascular disease (cholesterol, lipoproteins) in those with metabolic syndrome or type II diabetes; it seems to be highly dependent on the diet that is eaten alongside the eggs.
For more information on this relationship, see the FAQ entry on eggs and cholesterol.
Omega-3 is being added to some eggs through changing the hen's feed prior to her laying the egg. As noted in the topics page for eggs (Chicken), the fat profile of the egg is dependent in part on the hen's diet. These eggs seem to confer additional benefits to heart health through moderate consumption.
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