Slow running paleo ancestors were susceptible to fast running tyrannosaurus as well as low flying pterosaurs, which may also account for the short life expectancy...
No doubt. It was difficult to avoid dying from trauma and infectious disease in the old days. It was probably difficult to avoid an assignment change from hunter to hunted to dinner, or at least hard to avoid being killed while trying trying to obtain dinner. Very often, the designated lunch objected vigorously to said designation. And don't forget wars, mostly a young man's game.
But apparently, if you got past the "out in the field hunting" stage to the "you young guys bring me my supper" stage, looking all the way back as far as recorded history goes, it appears they lived at least as long as the longest known lifespans today. The trick appeared to be getting past those first years. Those dying young kept the averages much lower.www.ancient-origins.net/news-evolution-human-origins/life-expectancy-myth-and-why-many-ancient-humans-lived-long-077889
What is commonly known as ‘average life expectancy’ is technically ‘life expectancy at birth’. In other words, it is the average number of years that a newborn baby can expect to live in a given society at a given time. But life expectancy at birth is an unhelpful statistic if the goal is to compare the health and longevity of adults. That is because a major determinant of life expectancy at birth is the child mortality rate which, in our ancient past, was extremely high, and this skews the life expectancy rate dramatically downward.
The early years from infancy through to about 15 was perilous, due to risks posed by disease, injuries, and accidents. But those who survived this hazardous period of life could well make it into old age. ................Drawing upon archaeological records, we can indeed see evidence of this. The "Old Man of La Chapelle", for example, is the name given to the remains of a Neanderthal who lived 56,000 years ago, found buried in the limestone bedrock of a small cave near La Chapelle-aux-Saints, in France in 1908. Scientists estimate that he had reached old age by the time he died, as bone had re-grown along the gums where he had lost several teeth, perhaps decades before. He lacked so many teeth in fact that scientists suspect he needed his food ground down before he was able to eat it. The old man's skeleton indicates that he also suffered from a number of afflictions, including arthritis. ..............If we look again at the estimated maximum life expectancy for prehistoric humans, which is 35 years, we can see that this does not mean that the average person living at this time died at the age of 35. Rather, it means that for every child that died in infancy, another person might have lived to be 70. The life expectancy statistic is, therefore, a deeply flawed way to think about the quality of life of our ancient ancestors.
So is modern society more beneficial for health and longevity than, say, the hunter-gatherer lifestyle? To help gain an answer to this question, scientists have compared the life span of adults in contemporary hunter-gatherer tribes (excluding the infant mortality rate). It was found that once infant mortality rates were removed, life span was calculated to between 70 and 80 years, the same rate as that found in contemporary industrialised societies. The difference is that, in the latter, most individuals survive childhood (Kanazawa, 2008).
It is certainly true that improvements in food availability, hygiene, nursing care, medical treatments, and cultural innovations have resulted in far fewer deaths caused by external injuries, infections, and epidemics, but on the other hand, we face a global cancer crisis that our ancient ancestors never had to contend with on such a scale. Are we just replacing one form of death with another?
Though I doubt they were Paleo, I still bet the Kings and Queens of England ate plenty of meat and saturate fat, probably far more than the average peasant who probably had a life expectancy of 40 years or so. And I bet for the most part, most of these folks escaped death due to injury that would come from hunting or hard manual labor and even wars. Although, court intrigue and assassinations might certainly have been something to watch out for. But notice the amazing fact that, even as far back as the 700s ( zero modern medicine! ), King Offa made it to 66 years(many a modern male going to the best docs dies before that age) and starting about
the 1300s most of these royal types were living well past the late 60s and early mid 70s, and even in the 1600s many are making it to the late 70s. Notice that King George the 3rd ( is that George Washington's nemesis?) was born in 1738 and made it to 1820, a whopping 81.6 years! And grand finale, Queen Victoria, born in 1819, also made it 81.6 years! No heart stents, no coronary bypass surgery, no anti-biotics, no flu shots/vaccinations, no emergency C-sections for when child birth goes wrong, no chemo-therapy, RT or RPP. www.britroyals.com/aged.asp
Average age at death for American males with all of the above medical advantages? 78.8 years. kottke.org/13/08/the-surprising-ages-of-the-founding-fathers-on-july-4-1776
Some more ages, just for reference:
Thomas Jefferson, 33
John Adams, 40
Paul Revere, 41
George Washington, 44
Samuel Adams, 53
The oldest prominent participant in the Revolution, by a wide margin, was Benjamin Franklin, who was 70 years old on July 4, 1776. Franklin was a full two generations removed from the likes of Madison and Hamilton. But the oldest participant in the war was Samuel Whittemore, who fought in an early skirmish at the age of 80. I'll let Wikipedia take it from here:
Whittemore was in his fields when he spotted an approaching British relief brigade under Earl Percy, sent to assist the retreat. Whittemore loaded his musket and ambushed the British from behind a nearby stone wall, killing one soldier. He then drew his dueling pistols and killed a grenadier and mortally wounded a second. By the time Whittemore had fired his third shot, a British detachment reached his position; Whittemore drew his sword and attacked. He was shot in the face, bayoneted thirteen times, and left for dead in a pool of blood. He was found alive, trying to load his musket to fight again. He was taken to Dr. Cotton Tufts of Medford, who perceived no hope for his survival. However, Whittemore lived another 18 years until dying of natural causes at the age of 98.
John Adams age at death 91 years
Thomas Jefferson age 83 ( both died on the same day and year, July 4th 1826)
James Madison age 85
Benjamin Franklin age 84
And our maximum
life expectancy advantage, even with all of our modern knowledge about
medicine and diet and machines and computers, is how much exactly?
You know, it could make you wonder about
diets and even at least some things about
Post Edited (BillyBob@388) : 8/16/2016 8:17:53 PM (GMT-6)