I eat meat and some fruit, veg, and nuts.
If you count the paleo diet as over about 40,000 years (which we aim for), then there was not many geographies for man. None of our forbidden foods from other continents were being consumed by our ancestors.
It is possible that some of the food paleo man didn't have access to are ok, but I'm not going to gamble my health on it. It takes too long to find out the hard way that you are getting sick. Paleo man wasn't exposed to it, so we didn't evolve to eat it.
I do think we are better off than the average PB'er (not that our diet is very different). Even though the average PB'er is vastly better off than the average SAD eater.
For one example - My wife has found out that her asthma is directly caused by dairy and she has been pretty much medication free since cutting it. We have also met a few other paleos that have fixed their asthma by cutting all dairy. Even a tiny bit causes attacks and the effects are long lasting. It was very hard to pin down.
I would encourage any asthmatic to go dairy free for a month to see if it fixes their asthma.
It also appears that dairy may be part of the cause of MS. I'm certainly not going to experiment with that either.
Saying that cheese or yogurt are fine is untrue.
maba - From Wikipedia "Primitive forms of spinach are found in Nepal and that is probably where the plant was first domesticated. Other than the Indian subcontinent, it was unknown in the ancient world"
Paleo man didn't add salt to food, so why should we? There is plenty of salt in the food we eat. One reason to avoid salt is that excessive dietary salt causes calcium excretion and is a cause of osteoporosis.
I have been eating paleo for almost 4 years and I have researched diet and nutrition almost every day since we started. My wife and I refined our list over the first year or so, while experimenting with our reactions to foods.
Since eating strict paleo my wife has lost her asthma and no longer gets migraines (which used to be common). I don't get joint pain in my knees (which I used to), we sleep better, we feel better, we lost our excess body fat, I am putting on muscle easier, and the list goes on.
We will never go back.
The "Seven Deadly Sins"
Grains (wheat/rice/oats etc) . . . . . Dairy (milk/yogurt/butter/cheese etc) . . . . . Nightshades (peppers/tomato/eggplant etc)
Tubers (potato/arrowroot etc) . . . Modernly palatable (cashews/olives etc) . . . Refined foods (salt/sugars etc )
Legumes (soy/beans/peas etc)