> At a broad, high level, the message has to be simple and direct:
"Vitamin D is the sunlight vitamin. Eat liver, or take a supplement, in the winter when the sun has gone away."
> Getting into vitamins, whatever, minor optimizations, how do you propose that works
The CDC could simplify the actual findings of science to something understandable for most people.
> when literally everyone understands "America has an obesity problem--stop eating so much", and yet there America is.
This explanation -- 'people eat too much' -> obesity -- is simplistic. Sometimes people eat too much, but most of America's weight problem stems from the food industry's misapplication of science. My father and his wife have extra weight mostly because they eat meat-based diets complemented with industrial starches (boxed chips, crackers, pancakes, fake syrup, etc). They eat salads, but only when they're coated with large servings of industrial salad dressings (soybean oil is cheap).
Maintenance pharmaceuticals put a lot of weight on people too.
The war on butter was quietly abandoned by the powers that be. The food industry quietly reformulated some of their worst products to remove trans fats, but there's still a lot of terrible foods on the grocery stores' shelves.
The obesity epidemic is evidence of crimes against the public's health.
