For decades we have been indoctrinated that cholesterol from saturated fat is the major harbinger of heart disease and death. The result has been big profits for unhealthy, cheaply produced no/low fat foods like margarine and Big Pharma's dangerous statin drugs.
Over several decades, this propaganda has diminished or even destroyed the health of millions while killing thousands who have been put on cholesterol lowering statin drugs. Simply put, cholesterol as the major heart disease threat is disinformation.
Bad vs Real Science
The original study that started the whole cholesterol/heart disease hypothesis was conducted on rabbits. They were fed enormous quantities of butter and lard daily, equivalent to a quart a day for humans. But those animals are herbivores, not omnivores. Herbivores are not equipped to digest animal proteins and fats. When a similar study was conducted years later on rats, which like humans are omnivores, there were no negative consequences whatsoever.
More impressive are the three epidemiological human studies involving tens of thousands of subjects over two to three generations. They all discovered higher death rates among those with lower cholesterol counts.
Those studies were: The Framingham Study; The Honolulu Heart Program Study; The Japanese Lipid Intervention Trial.
Many agree that stress coupled with heavy refined carbohydrate and junk food diets (SAD) are the sources of most obesity, diabetes, chronic inflammation, and heart disease.