He outta brush up on the medical journals. There is no study actually linking high cholesterol to heart disease nor is there any link to a diet high in saturated fats and meat and high cholesterol. People who reverse the food pyramid and consume large amounts of meat and fat and little to no grains and processed foods are actually healthier and happier.
As for humans being plant eaters - that’s just total hogwash. Several key nutrients the human body needs are only found in animal products. Humans are omnivores which is why we have both flat teeth and canines.
It’s a free country of course but a natural human diet consists of meat and plant matter and little to no dairy or grains.