I was surprised to read how Native American Indians routinely lived to 120, without losing hearing, vision acuity, strength, etc. At 120, they'd have a ceremony, tell everyone good-bye, lie down on top of a hill, and voluntarily die.
I read that on reservations this is still common.
The Indians 200 years ago generally ate sporadically; when they made a kill, everyone would feast on the spot, often on raw meat and organs, then maybe not eat for another five days. Some tribes grew gardens and most dug roots and ate wild food that was available, dried meat, but other tribes semi-starved over the winter and anyone not strong enough, died.
But, if not killed in battle or while hunting, or starving, most lived very long, healthy lives, with few aging problems.
I read a stack of books on Indian captives and was surprised to learn that if not recaptured by their families within 6 months, these Caucasian kids would be totally turned to Indian ways. The army scout men who returned them, often had to "capture" the children again, since the kids didn't want to leave their new Indian families, usually could no longer speak or understand English (past SIX MONTHS), and even if returned to their families the children would no longer accept their lifestyle.
They could make a weapon out of anything in minutes, ride and control any horse, no matter how wild, shoot arrows, or throw knives with deadly accuracy, and do supernatural things like make game animals appear, control the weather, tell the future, heal animals and people from a distance with their minds.
They usually refused to live indoors or eat cooked food, and continued their Indian lifestyles, sleeping on the ground outdoors year around, and usually escaping back to their Indians families at the first opportunity, or after they were old enough to make their own choices.
Few ever cared about making money or harming the land with ploughing, and most spent their lives outdoors.
Strangely, these white people ALSO lived to 120 years without loss of strength, sight, hearing, etc., so it had little to do with DNA.