"That the hunter-gatherer was healthy there is no doubt. Weston Price noted an almost complete absence of tooth decay and dental deformities among native Americans who lived as their ancestors did.5 They had broad faces, straight teeth and fine physiques. This was true of the nomadic tribes living in the far northern territories of British Columbia and the Yukon, as well as the wary inhabitants of the Florida Everglades, who were finally coaxed into allowing him to take photographs. Skeletal remains of the Indians of Vancouver that Price studied were similar, showing a virtual absence of tooth decay, arthritis and any other kind of bone deformity. TB was nonexistent among Indians who ate as their ancestors had done, and the women gave birth with ease."
I question these facts of history because recently I have been under the impression that mostly diet determines one's health, along with physical activity and spirituality. Even though people such as N. American Natives completely mastered this lifestyle better than we ever could now, they still died horrible deaths from European disease. They were the closer to nature than we will ever be, yet it didn't make a difference.
Since vaccines don't work, we basically can only depend on immunity to disease from our ancestry.
I would try and discuss the whole HIV/AIDS pandemic, but I'm not even sure what I believe. I want to believe that an extremely healthy individual could survive any disease, but looking at history, it just doesn't seem plausible.