At my last MOT the practice nurse burbled on about 'good' cholesterol levels (mine are high-ish) and 'bad' cholesterol levels (mine are low)
Never heard such a load of old tosh in my life, but I sat smiling benignly as I really like her, she's so fat and jolly.

Shortly after that, a new severe lady (not sure of her role) wanted to see me, and said I need to go on statins. They seem to be 'in' at the moment, and I bet the drug companies are rubbing their hands and their bosses booking trips to Barbados. I said I jolly well wouldn't (best 'naughty girl attitude') and she wasn't terribly pleased. She looked as if she'd like to give me detention or 100 lines.

As you say, people have dairy-farmed for millennia, and we're well able to cope with milk, butter and cheese. It's all the processed rubbish that's not good for us.