Considering what I have read on the subject while researching cholesterol years ago due to my own high levels, the average American diet is pretty awful according to US nutritionists. Ours is a bit better, but not much, we are not into sugar as much that's all.
Without going to the extremes of the current 'Paleolithic' diet fad, changing our diet to what our ancestors ate a Century or so ago is a good move. Lean meat and fish, grilling rather than frying, avoiding high sugar or high salt content processed foods, and lots of fresh fruit and veg is the way to go. Frozen veg are ok too, as they are snap-frozen within a very short time of picking, and can be kept on hand for use when something is out of season. Canned goods can have a lot of salt or sugar added, so I am careful with them.
Good excuse for a BBQ and salad, with a nice naturally produced vinous beverage.
Karen.