That statement is much too reductive to be true. Yet it might still be closer to the truth than the old belief that it's best to avoid fats and eat loads of grains.

Is it? I haven’t seen any controversy around it, just a gradual shift to recommendations for more protein and fat vs less carbs.

I haven't heard of any such thing, except made by people who are selling something.

Did you talk to anyone who successfully lost weight and kept it off? I have, and from my own experience and talking to others who did the same _every_ single person succeeded via low card high protein/fat. Would be super interested in meeting someone who lost weight with a high carb diet and how they pulled it off. It's really hard for a lot of psychological and hunger based reasons which is why basically nobody can do it

I mean… it’s all crap in the end, right?

Aren’t we just supposed to have a healthy mix of fats, proteins, carbs and fibre in a sensible portion size related to how much energy you usually expend over a given period?

It's not. It's only controversial if you follow FDA recommendations. Any athlete knows this. Fat and protein are REQUIRED to build muscle and endurance. Carbs are great pre/post workout for recovery.

Our society has a massive excess of carbs in our diets that don't get used for energy production and just turn into fat.

Muscle and endurance does not automatically mean a healthy heart and liver though.

Nor does muscle and endurance in your youth equal longevity.

"Health" means different things to different people. An athlete might define health as physical strength, but another person might define health as the successful avoidance of illness and disease.

The longest living people who are super healthy in their 90s are not very muscular nor do they really partake in vigorous exercise. They're thinner people who didn't their lives eating little-to-zero meat and doing light physical activities like hiking.

Health and recovery/avoidance of illnesses is DIRECTLY related to physical fitness. This isn't even debatable. You're just making excuses for not needing to be physically fit.

Longevity is a silly game to play but on average physically fit people have more longevity as well. The people you're mentioning are genetic outliers. It's more about being able to actually do things late into life.

There's no connection between eating "little meat" and living longer, this is pure propaganda.

Yes it does. Physical fitness is directly related to heart health and easier recover from illness etc.

Explain how one could achieve high endurance, muscle building without healthy organs? Minus some disease I can't think of a way to do this.