Now with better lipoprotein science at hand, researchers are gradually dismantling the simplistic (if not erroneous) assumption that saturated fat is categorically bad and rebuilding a much more nuanced and individualized understanding of what causes heart disease. In the process, butter is getting a long overdue pardon.

Here are the top offenders: • Trans Fats.

Even today, it is so heretical that no one wants to say the obvious—that casein is the most relevant chemical carcinogen ever identified.