I hope you use more nuance when working on your AI applications than in reading what I wrote. "Diet almost certainly played the definitive role" - the words I used leaves room for people who have genetic disorders that affect them. I even specifically stated that it was diet "barring a genetic issue" FFS.

Only 1 in 300-500 people have genetic disorders that affect cholesterol. For the rest, it is their diet. It can't be anything else by definition. Either it is inherent (genetic) or external (diet). There are probably 0.001% of people that contract a disease that affects their cholesterol, too. But in sum it will be roughly 1 million Americans with genetic reasons for heart diseases, and roughly 20 million due to diet/lifestyle.

Of course humans produce cholesterol. You seem to be more interested in being a pedant spewing jargon than having a discussion. It is common parlance to refer to "cholesterol" as external cholesterol.

You're right that trans fats are bad, and particularly bad in the US as they added to so many foods.

I was responding to a post that said "diet almost certainly played NO role" in Mr. Lang's wife's condition. I stand by short reply.