Measuring meat and dairy: how much red meat and butter can fit in a heart-healthy diet?

New dietary guidelines prompt questions about how much red meat and butter can fit into a heart-healthy diet. Health authorities have long advised limiting fatty cuts of red meat to about 3–4 servings per week due to saturated fat and LDL cholesterol linked to heart disease, while also highlighting environmental and animal-welfare concerns. The Washington Post's Well+Being piece reports what three top nutrition experts say about realistic amounts for a healthful diet focused on longevity.