It has been recently reported (see for example this) that:
A Harvard study of over 21,000 male physicians found that men who ate up to 6 eggs a week had no increase in their rate of death. But once they ate a seventh egg, their risk of death went up 23%. The men were studied over a 20-year period...However, when one looked at the data in more details, a completely different picture emerges. See for example this study.
It turns out that the group that ate ≥7 eggs per week (the highest bin) happened also to have more than twice (4-2 times) the rate of diabetes (and were older) compared with the lower egg bins! See Table 1. Since diabetes t2 increases the risk of death by a factor of 5 (5 to 10) , this factor alone may explain an increase in the death risk among the 7 egg group!
The death risk was about the total mortality. There was a statistically marginal increase in total mortality in the highest group (see Table 4) but it wasn't confirmed neither by the MI risk (Table 2 - in fact the risk goes down!) nor by stroke (Table 3 - the risk stays the same). Unfortunately the authors do not mention what were the 7 egg group dying from.
This may have nothing to do with eggs but everything to do with diabetes!
Other studies not only fail to confirm that eggs correlate with cardio-vascular risk, but show in fact some risk reduction, especially significant in case of stroke! See for example this or that study.