Do we know when the first ideas of a "proper" human diet began? For example, what would be the most primitive "food pyramid" we know of beyond "eat food"?

if hunter gatherer then food by season and moving around to different locations as things become ripe. so they would be sets of plant, animal, fruit, nut, grass, fish, etc that happen in the same location at a given time of year. pattern of visiting the same locations at the same time each year.

http://www.skwirk.com/p-c_s-17_u-455_t-1227_c-4695/daily-life/wa/daily-life/aboriginal-people-and-torres-strait-islanders/traditional-life "Men and women had different roles when it came to providing food for the tribe. Women and children would often spend their days searching for and gathering food from the local area. They gathered things like fruits, nuts, seeds, roots, yams, witchetty grubs, insects, snakes, lizards, stalks, berries, edible leaves, honey, shellfish, lobster, pipis, crab, mussels and yabbies . The traditional role of the men was to hunt and fish for the meat to feed the tribe. They would spend their days making the necessary tools needed to catch and kill animals and then go out and track and stalk their prey. Traditional prey included kangaroos, ducks, goannas, fish, rabbits, small mammals and occasionally emus. The changing seasons meant different foods were available. For this reason, many Indigenous tribes would travel to different areas to find different foods. The groups were able to read the land to determine the seasons. Tribes in wetter, coastal areas had a greater variety of foods than those that lived in arid, desert areas. "