I think quinoa is good. It can be eaten as a hot cereal, too. I also like couscous and I'd like to try spelt. I have to watch grains carefully, though. Too much is not good for you. (I love grains and the things that can made form them way to much)
This should be at least an interesting thread. Everybody will approach it from a different perspective. Some are really into health food, supplements and body-building. Some, like me, are overweight and food is an everyday, very unpleasant battleground. For some, it's a real health issue.
As to what's written about various foods and what human beings should and shouldn't eat, after years of reading stuff, I'd say nobody really knows and the science changes all the time. Something's good for you one day and then it's bad for you the next. Or it's good for certain reasons, but bad for another reason. Or, if I followed all the recommendations about what I should be eating, I'd me more overweight then I am, because of the number of servings recommended per week for all these different healthful foods.
Anthropologically speaking humans are vegetarians, who eat meant in portions, when available. In almost all hunter/gatherer societies, the gathers provide most of the food eaten, by far and hunters worked hard to provide meat and fish. Meat and fish, though were more of a side dish than the main entree. One known exception was Plains Indian tribes, who ate enormous amounts of meat. Several pounds a day, per person. Buffalo were so readily available. They numbered in the millions. Herds could take several days to pass by.
Northwest American tribes ate a lot of fish (mainly salmon), because it was incredibly plentiful. They are an example of people who almost always had a surfeit of food.
Our canine teeth are indeed indicators of our omnivore status. Plant eaters don't need canines, period. Meat is not bad for us, except for how much of it we eat. Try measuring out 3 ounces of meat. That's one serving for most meat and it's 4 ounces for non-fatty fish. Red meat is more like 2 ounces as a serving. You would not believe how tiny those servings look. Believe me, I've measured it many a day and its minuscule. That's why eating a lot of fruit and vegetables and legumes is helpful. It fills a person up.
There is more than one problem that has likely led to our current poor eating habits in general.
-Super-sizing portions. I can't tell you how huge servings are today compared to 50 years ago. It just boggles my mind.
-Taking physical exercise out of earning a living for so many people.
-A near constant flight or fight reaction is non-adaptive to current lifestyle. Stress releases cortisol which is very damaging and causes weight gain. When you had to run for your life from a dangerous animal or enemy, it was very suitable to be in that mode. Being stressed at work and home due to deadlines and other pressures is completely non-adaptive and pointless.
-Food industry - Human beings are biologically lured by things that taste fatty or sweet. Food manufacturers know this and use it against us. When calories were in low supply, because humans constantly had to work everyday just to eat, they automatically stocked up on high-calorie fats and sweet things when they could, because they were rarely come by. Unfortunately out reaction is still to stock up, even though we have plenty of food.
-Food has become more attached to emotions, not just a physical need, because the majority of us are rarely lacking food. (Although 1 in 6 people in the US struggle with hunger daily. What's wrong with that picture in the richest country in the world?)
-We are too obsessed with body image, instead of good health.
Those are a few off the top of my head.
Personally, I think the best advice is to eat as close to the natural state as possible, control portions (really key), eat mostly fruits and vegetables, eat a wide variety of foods. It isn't really more complex than that. It just seems really hard for people to do. Being so removed from nature and the process of getting food, seems to have also put us out of touch with out real food needs.
I don't think 2-3 ounces of red meant now and again is going to ruin anybody's health, if they want to eat it. Same goes for chicken, pork or fish. Eggs or dairy are okay in moderation, too. (Dairy, means milk, cheese, yogurt, ice cream, etc. or anything made with them like puddings, custards. ) I only occasionally eat read meat or pork. If you don't want to eat any of those foods, because they come from animals, I respect that. Did you know that the most common form of yeast used in breads and such comes partly from an animal product? You have to use vegetarian yeasts. It's amazing how hard it is to avoid animal products in your food. Like jello. Geez, it looks so innocuous.