What about the studies that seem to show a benefit from replacing animal fats with whole grains? Whole grain as I understand it is somewhat modern in most plac

What about the studies that seem to show a benefit from replacing animal fats with whole grains? Whole grain as I understand it is somewhat modern in most places and don't seem to have been widely available till very recently, now just about every grain product has a whole grain version. There's a few fats that seem to be healthy, but most people don't need any extra energy.