Eat Fat. Saturated Fat...
Cardiologist Aseem Malhotra, from London's Croydon University Hospital writes in the British Medical Journal:

Recent prospective cohort studies have not supported any significant association between saturated fat intake and cardiovascular risk. Instead, saturated fat has been found to be protective. The source of the saturated fat may be important. Dairy foods are exemplary providers of vitamins A and D. As well as a link between vitamin D deficiency and a significantly increased risk of cardiovascular mortality, calcium and phosphorus found commonly in dairy foods may have antihypertensive effects that may contribute to inverse associations with cardiovascular risk. One study showed that higher concentrations of plasma trans-palmitoleic acid, a fatty acid mainly found in dairy foods, was associated with higher concentrations of high density lipoprotein, lower concentrations of triglycerides and C reactive protein, reduced insulin resistance, and a lower incidence of diabetes in adults. Red meat is another major source of saturated fat. Consumption of processed meats, but not red meat, has been associated with coronary heart disease and diabetes mellitus, which may be explained by nitrates and sodium as preservatives.

He's wrong on that last bit. Also, prospective cohort studies are part of the shit data pool of science (they're observational studies that are considered slightly less shitty than retrospective cohort studies I call "leaps to conclusion after the fact"). Nevertheless, there's plenty of good science supporting how healthy it is to eat meat -- and to eat a low-carb, high meatfat and butterfat diet.

via @AnnChildersMD