What is good nutrition?  What philosophy should be followed?

The Weston A. Price Foundation advocates for a nutrient-dense diet based on whole, unprocessed foods, which they believe supports optimal health. Their philosophy emphasizes traditional foods that are rich in essential nutrients and healthy fats, including grass-fed meats, wild-caught fish, pastured eggs, full-fat dairy, organ meats, and fermented foods. They also promote the avoidance of processed foods, refined sugars, and vegetable oils.