Glandular extract dates back thousands of years, being used by the ancient Hindus, Egyptians, and Greeks. In traditional cultures, people who were sick were given liver to eat; those with weak hearts were given heart to eat; iron-deficiency anemia was treated by giving bone marrow extract; desiccated thyroid was and is still given by many physicians. Dr. Weston A. Price, who traveled the world over to study dietary practices of healthy people from traditional cultures, noticed that the healthiest people regularly consumed organ meats and valued them very highly as being some of the best health building foods.