A recent study of mummies found a significant number of the elite mummies (which most were) had clogged arteries, calcification of vessels, and other symptoms of heart disease and obesity.
This has been found before, but this is the largest study so far.
The BBC article I read suggested it was caused by the supposed large amounts of fatty meats being eaten by the elite.
However, as I suspected he might, Rafe said "There's currently a bit of discussion on GNXP (Gene Expression). Michael Eades, auther of Protein Power, has published in the past showing that the Egyptian elite were in fact obese quite regularly, and attributes it to a diet that was very high in grains combined with a sedentary lifestyle, not the high in meat diet proposed in the BBC article."
Quoted from Science Daily: "UC Irvine clinical professor of cardiology Dr. Gregory Thomas, a co-principal investigator on the study, said, 'The findings suggest that we may have to look beyond modern risk factors to fully understand the disease.'"