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Originally Posted by Jess7286
Well farming had to come from SOMEWHERE. They had to have cultivated some sort of vegetables to transform into widespread agriculture. From what I've noticed about third world countries, agriculturally-based societies are fairly healthy. They're very active and eat a decently balanced diet, albeit more carb-based than protein-based since meat is harder to come by.
Essentially paleolithic refers to "before farming," and neolithic (or "new stone age" refers to the period during which agriculture was developing)
Farming is actually a rather "new" invention. According to the fossil record, it appears that farming is only about 10,000 to 15,000 years old. This is the very basis for the paleolithic theory. That "farming" brought with it diseases that were previously unknown.
For example, the polio you mentioned has not been found in prehistoric (paleolithic) bones. The earliest archaeological evidence of polio is found in bones 4,000 to 5,000 years old - that is after farming was invented.
As farming practices (especially of grain crops) became more common place, another change was seen in the fossil record along with evidence of farming - . shorter lifespans, more signs of disease through the lifespan, especially diseases such as arthritis and periodontal disease, cavities, tooth loss...
Most of these diseases where unknown or virtually non-existent in the fossil record prior to the invention of farming. The polio you mentioned earlier was apparently not a paleolithic disease. The earliest known record of polio's occurence is around 5,000 to 4,000 years ago - well within the neolithic period (long after the invention of farming).
Likewise, hepatitis is not really a disease, but a symptom. It's an inflammation of the liver that can be caused by bacterial or viral infection, or as a result of liver toxicity. As a soft-tissue disease, we don't know much about paleolithic hepatitis - but diet is a known component of some forms of hepatitis. Studies have found that modern hunter-gatherer societies (those that do little to no farming) are much healthier than even the healthiest farming cultures in many respect - especially when you rule out differences in access to medical treatments such as inoccuation against communicable diseases.
I think it's Barbara Berkeley's book, Refuse to regain that best describes the progressive decline in the human diet. At least in my opinion. It's not so "sciencey" that you need a graduate degree to understand it, and not so dumbed down that it's meaningless. I'm repeating this from memory, so I'd recommend anyone wanting to understand it better than I can explain it - go directly to the book.
She talks of three "waves" of diet/health decline.
The first period (before the first "wave" of health decline)
Paleolithic (roughly 2 million to the invention of farming somewhere around 10,000 years or so ago). Hunter-gathering socieites. Most chronic "lifestyle" diseases were essentially non-existent. Life spans may even have been longer, health at death was noticeably better (fewer signs of wear and tear disease on the bones. Little tooth loss...)
First wave -the first wave of health decline is seen with the advent of farming, called the Neolithic period (the prehistoric period in which farming was becoming common place)
Height declined, and arthritis and dental disease started showing up in the fossil record.
The Second wave -the second wave occurs with the invention and affordibility of refined flours, refined sugar and other processed foods. Although technically sugar was first available in the 15th century (I believe), white flour and white sugar became affordable to the common person very recently (even 150 years ago white flour and white sugar were so expensive, it was kept locked - only the lady of the house had a key to the sugar chest).
This can be seen in the european history. Lifestyle (arguably nutrition-based) diseases such as gout and obesity plagued the monarchy and royalty (such as England's King Henry VIII, who lived from 1492 to 1548) who ate refined grain and sugar, than the peasantry (who even though they ate some grains, their diet also included far more low-carb, very high-fiber fodder. It is said that the cabbage was the primary diet of the peasantry).
The third wave, and by far the steepest (in which health problems are affecting the most people and the most severely) is what I believe she calls "new foods," or "modern foods" paired with the steepest decline in activity. While whole wheat bread is a food that is relatively new to the human diet - twinkies aren't anything at all like foods found in the natural environment.
According to Dr. Berkeley each wave has taken us further and further away from a natural diet and lifestyle - and I think it's the best way to look at healthy nutrition.
Start working backwards, and you'll see health improvements. Start eating and living like your parents, and you'll lose weight and improve your health.
Start eating like your grandparents, and you'll see even more.
Many people can probably live healthfully on great-grandma's diet. Other's may have to go all the way back to Grok, and most folks probably will end up somewhere in between.
But the number of health problems we've been seeing in the last 50 years suggests that we need to start that trek backwards. Eating 2010 style, is healthy for very few people. Some people may have to go back to 1900, some to 5,000 BC, and some may have to go back to Grok.