dispirited back bother affects people of all ages , but allot to theWorld Health Organization(WHO ) , the reason of the onset of lower back pain remains “ obscure . ”Kimberly Plomp , a human phylogenesis researcher in the Department of Archaeology atSimon Fraser University , tells IFLScience that there are many unlike factors , including human organic evolution “ that could determine whether someone is going to grow pathology that would lead to back annoyance . ”
“ Evolution is not perfect . A expectant misconception about evolution is that it ’s continuing along a line that has an aim or a end and it ’s not like that at all , ” Plomp adds .
The human ascendant walk on all fours , which helped them to rise tree and get around diverse habitats , according to theSmithsonian ’s National Museum of Natural History . Over time that behavior gradually changed , and fossils show us that by around four million years ago , other human species were “ mostly two-footed , ” which allowed them to take reward of both near open arena and dense forest . By around 1.9 million years ago , when the environment was “ fluctuating wildly between moist and juiceless , ” early humans had become “ fully two-footed ” and had evolved a unambiguously human curved spine . The timeline of the evolution of unsloped walk is , however , much well understood than why bipedalism evolved .
Plomp explains that the “ rapid ” evolution of human ' ability to walk on two leg may have a significant shock on human health . The gain of humans walk upright might have come with its own set of pain in the neck – namely in the lower back . Our knuckle joint - walk ape cousin-german are thought to stand less from back pain as they do n’t have the extra accent localise on their back from upright walk .
In a late field , published inBMC Evolutionary Biology , Plomp studied the spine material body of chimpanzees , orangutans and both mod and ancient human . She found that people whose spines were most similar to chimps were more likely to have a small wound that forms in the phonograph record between vertebrae in the lower back , get hurting .
Plomp is ready to point out that the study was little , but say that it add to a maturate shoal of thought that our upright carriage could be placing more stress on our sticker , making it a conduce factor to depress back annoyance . Plomp also explicate that those with spines more standardized to chimpanzee still had spines “ well within the range of normal human fluctuation . ”
