It's not just that meat and sugar are unhealthy, but also that presence of meat and sugar correlate with absence of healthier foods, such as vegetables, legumes, seeds, fruits and nuts.

Referring to particular foods as "healthy" or "unhealthy" is reductionist and unscientific. All foods have both positive and negative effects. Certain meats are generally quite good, at least in moderation, particularly for getting high quality protein. Eating too many Brazil nuts can cause acute selenium poisoning.

Be more specific. If you want to convince anyone here then please cite high quality studies which actually meet evidence-based medicine criteria. All of the studies so far which claim to show meat is unhealthy were badly flawed observational studies which relied on subject reported data, lacked proper controls, and only showed very small effects.

There is still much scientific controversy and no real consensus. Much of what passes for nutrition "science" is basically junk. To be more specific, hardly any studies justify an "A" grade recommendation according to evidence-based medicine criteria.

https://guides.library.stonybrook.edu/evidence-based-medicin...

There are many people who follow carnivore diets who seem quite healthy. It's ridiculous to assume that we know the right answer when so much research remains to be done.

As for sausage versus vegetables, you'll have to be more specific. Those are two very broad categories of food and the exact effects will vary tremendously depending on specific ingredients, cooking, the eater's genetics and microbiome, etc.

You know that dietary cholesterol has no relation to blood cholesterol levels, right? You know that the saturated fat myth--started by the sugar industry--was debunked, right?

If meat were really so obviously bad for you, then Inuit should be keeling over from atherosclerosis by their 30s or so. They don't.

(If you're unaware, the Inuit diet is very heavily meat-based; there just simply isn't a lot of opportunities for plants in the High Arctic. They're getting sufficient vitamin C from meat, which is actually moderately difficult!)

Isn't it interesting that meat provides all essential amino acids and fatty acids. And not some complex combination of various food groups like a vegan diet must include, just red meat. Meanwhile there are no essential carbohydrates.