Even now mostly the world eats different grains and these grains are about 45% of each persons diet. In these 45% there is rice which takes about 19% of the grains we eat, then there is wheat which is 18% of the grains and other cereals take about the left over 8% of the grain in our diet. The meat makes up a surprisingly 9% of a average persons diet which is 5 times smaller in amount than the amount of grain we eat. The meat we eat is mostly beef, pork, seafood and other meats. Also not only that but even if meat has usually more fat in it than grain the meat we eat in a day gives your body only about 270 calories and the grain we eat gives us about 1,300 calories which means grain is currently giving us about 6 times more calories than meat. Knowing this can you imagine that sugar makes up about 20% of our diet which is about 2 times as much in our diet as meat and it gives us 570 calories which is also twice as much calories as meat. Humans 12,000 years ago didn't have even a close variety of food. Even 50 years ago we had 4% less sugar in our diet if it increases that quickly pretend how small was the amount of sugar in the diet of a human who lived 12,000 years ago, just imagine.
Its a modern world right now and everyone can't stand not eating junk food. Its might be for the better or for the worse and it is mostly the worst food choice. Even if people understand the fact that junk food is unhealthy it is still available world wide and is really easy to get because of how cheap and how often you can find this food not only understanding that it is a constant food source making our diet unhealthy unlike the cavemen diets. You can find it in and see it in the grocery store, fast food restaurants, TV and almost all the time it looks yummy for us.
Most of the diet that humans ate in the paleolithic era which was about 2.5 million years ago would have been meat including animal organs like the liver, kidneys and brains which are a very rich scorch of nutrients. Humans at times ate leafy vegetables, fruits and insects made up the rest of their food diet. Snails were eaten at the very least 150,000 years ago. At about the same time there were found parts of roasted tortoise meat that was eaten as a part of a ceremony.
Tools have been discovered around the world showing the fact that cavemen could and made flour. Most of the flour they ate was made out of cattails. Other foods they ate were moonworts, burdock, lettuce roots, edible grasses, seeds and rye. There is also a high possibility that not only cavemen had flour but also they could have been able to make bread and soup. The soupes could have also consisted of vegetables, plants, ducks and other different types of meat. The average lifespan of a caveman was about 18 years old even though there diet was healthy they died of bacteria, disease and predators.