Speaking from my own personal experience here. I was thin up to 40, have yo yo'd just above a healthy bmi since then but looked and felt good at that weight. I recently developed problem due to my body not processing fat. Honestly? I'd never paid attention to the fat content of things. I rarely eat fast food, ready meals, etc., so i thought i was fine.
We can't all be equally knowledgeable about all things. I'm smart and i didn't realise i wasn't eating in an ok way. 95% of my food is home cooked, love vegetables, beans/legumes, fruit, meat is mostly chicken and fish, but i was also consuming a lot of fat via butter, peanut butter, eggs, cheese, plain greek yogurt, etc., and this has led me to having to use NHS resources, i need a surgery, have had a blue light ambulance, emergency care from a specialist unit, etc.
I've absolutely now learned what i didn't know before, but it's too late, i now have to have a surgery. This could have been avoided through better education. You wouldn't know to look at me that my body was struggling to process fat. I'm all for government implementing best health initiatives based on research by professionals in their specialist fields of knowledge. It makes us a smarter, healthier, fitter nation. That's something to be proud of.