The Paleo Diet is based on what proponents believe our ancestors were eating from 2.5 million to 10,000 years ago, a period known as the Paleolithic Period or Stone Age.
Stone Age humans consumed a hunter gatherer diet that was seasonal, climatic and geographical. They were opportunistic eaters and scavengers who consumed whatever was at hand. Yes, road kill was on the menu. However, the Paleo doctrine asserts that milk as well as grains and legumes weren’t part of this diet.
Milk is rich in lactose and all paleo babies could secrete the enzyme, lactase, which breaks down the lactose for digestion. However, as our paleo kids matured the production of lactase gradually decreased as they stopped consuming milk.
However, choosing the Palaeolithic period as the epoch of healthy human living is entirely arbitrary. Humans continued to evolve and adapt during the Neolithic Period or New Stone Age which lasted from about 10,000 to 5,000 years ago.
It was during the Neolithic Period that some humans developed a trait that allowed them to produce lactase throughout there lifetime.
Raw milk provides good source of supplemental nutrition or is a rich source of nutrition if crops fail. And with the development of cheese making Neolithic humans had a food source that could be stored for extended periods.
This trait is believed to have given the people with it a major selective advantage. It is estimated that they would have produced 19% more children than those without it and this combined with cows, goats or sheep raised for milking may explain why Neolithic milk drinkers displaced the paleo hunter gatherers in Europe.
Natural whey protein powders are a modern equivalent of Neolithic milk processing and provide similar benefits. They provide easily digested supplemental protein that has under gone minimal processing. Whey protein concentrate is fine for most but if lactose is an issue whey protein isolate has had most of this milk sugar removed.
So Paleo eaters it might be time to move to the New Stone Age.