See WAPF link in my sig... it was an eye opener for me and a beginning to a great journey about what exactly is a healthy diet from an anthropological standpoint, before advertising and food processing existed.

For us its a big part about quality animals foods as those are the most nutrient dense. It's all about what is highest in nutrients. We get as much organic local produce as possible but vegetables are not the highest in basic nutrients.
We take high vitamin cod liver oil and eat grassfed or wild animal foods such as liver and seafoods, bone broths, raw grassfed dairy, pastured eggs. Traditional diets contained 5x the amount of mineral and water soluble vitamins and 10x the amount of fat soluble vitamins as "modern" diets and those are the basic amounts which the human body needs to function properly for good health.
Saturated fats are very important for the immune system as well, the whole modern hysteria is just plain wrong and canola and other rancid engineered vegetable oils are not healthy. We do grassfed butterfat and tallow, lard from free range pigs, coconut oil, palm oil and unfiltered olive oil.