Most people dying of heart disease depends on where they are. Some Asian countries never had heart disease until they began to adopt a more Western diet. And the "Western" diet really isn't traditional, either. If there are genetic predispositions towards heart disease, it's probably Nature's way to culling the herd since we don't have any predators that chase us.
The traditional Asian diet was rice, fish, and a lot of vegetables. The traditional and ancient Indo-European (aka "Caucasians") diet was heavy in dairy and meat. The dairy products were all fermented; kefir, yoghurt, cheeses, and so forth. It wasn't until the Indo-Europeans moved off the steppes did they begin farming. One has to look at truly traditional diets to see what their heart disease rates are. Many traditional diets rely heavily on vegetables, grain, and a little meat. Some of them are dairy-heavy, but they're all fermented dairy products.
Fat meat, sugars, and salt were scarce among early peoples. Wars were waged over salt, for example. The Celts around Gaul gained a lot of their power and wealth because they controlled a salt mine. Most meat was lean because they were grazing. If you wanted sugar, you had to raid a beehive or find fruit, which was seasonal. The genetic markers might be there, but that doesn't necessarily mean heart disease would happen unless your people started eating a poor diet over several generations. Some animals species carry the markers for certain diseases that only turn up when they overpopulate, for example. People might say, "Hey, we can have sugar and salt every day, as much as we want!" and count that as proof of prosperity. But the piper must be paid regardless.
