Humans Why Have Body Hair
Humans Have Body Hair | Why Humans Have Body Hair | Human Body Details | Human Body Hair System
Human body hair might seem to be useless for modern man but it could help us protect parasites and adding there’s a chance our female ancestors preferred a bug-free mate, and so opted for hairier guys. Humans appear relatively hairless compared with ape relatives but the density of hair follicles on our skin is actually the same as would be expected of an ape our size of body. The fine hairs that cover our bodies which have replaced the thicker ones seen on our close relatives are thought to be an evolutionary leftover from our hairy ancestors for body. Scientists are saying that these fine hairs are useful after all people with more of them are better at detecting bedbugs of body.
The scientists then tested how long it took the volunteers to detect bedbugs placed on each arm and how long it took the parasites to find a good place to feed on the body. The bugs of body were removed before they started feeding this. The researchers found that body hair significantly enhanced how well people detected the bedbugs of our body with participants noticing the bugs on the hairy arm quicker than they did when tested on the hairless arm with the hairs serving as motion detectors of body. The hair also prolonged how long it took the parasites to find places to feed and presumably because they hindered movement of body. Men seemed better at detecting parasites and they are generally hairier than women because of higher testosterone levels of male body. This does not necessarily mean that women are more likely to be bitten and blood sucking insects likely prefer to bite hosts in relatively hairless areas such as ankles of body. We will provide all details of health related time to time so keep visit this site for more details of human body.