Take a look at some of the studies saying saturated fat doesn’t cause heart disease. They are usually comparing the high saturated fat group to a group eating low saturated fat. Then you have to ask, what are they replacing that saturated fat with?
Often times, the subjects in these studies end up replacing saturated fat with equally unhealthy foods, especially salt and sugar. It’s no surprise then that they didn’t find any correlation to heart disease.
You will also notice that when the researchers specifically replace saturated fat with healthier foods like complex carbs or unsaturated fats, that the correlation suddenly appears.