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human beings are not nearly as furred as our closest archpriest relatives , a fact that has puzzled evolutionary biologists for more than a C . One unwashed theory for our relative hairlessness propose that womanhood long ago take over a preference for less hairy guys as a way to head off insect and other nasty hirudinean that might call a hide place .
But raw research suggests that this so - called " ectoparasite turning away surmisal " may not excuse theevolution of human hairlessness . In fact , woman favor relatively fuzz - destitute guys across the board , according to unexampled research published online Sept. 13 in the journal Archives of Sexual Behavior . This predilection for politic hide throw whether or not parasite risk is gamy .
Women tend to prefer men with less body hair, but researchers have yet to pin down an evolutionary reason for this preference.
" harmonize to evolutionary view , hairless men should be preferred , particularly in areas ( or cultures ) with gamy sponge threat , which means close to the equator , whereparasite richnessis gamy , " discipline researcher Pavol Prokop , a prof of biota at Trnava University in Slovakia , write in an email to LiveScience . " We compared only two rural area that differ in leech threat , but we determine no difference in woman ’s preference . "
Prokop and his workfellow asked 161 Turkish and 183 Slovakian charwoman to rate the attractiveness of men with hairy and hairless chests . To keep the men ’s show as consistent as potential , the researchers had men photographed from the neck to the shank with haired chests , and then postulate them to shave before posing for an identical photo .
Turkey was chosen because the country has a higher rate ofparasite - transport diseases , such as malaria and dengue fever , than Slovakia and has long had more instances of these illnesses , the investigator wrote . The researchers expected to find , then , that Turkish women would be more tender to parasite business organisation and favor less - hairy men than their northern opposite number in Slovakia , where parasites are less of an topic . [ Top 10 Disgusting Parasites ]
rather , the researchers found that very few charwoman in either land opt a hairy chest of drawers . Only about 20 pct of cleaning woman rated the more hirsute versions of the men as more attractive .
Before the ectoparasite conjecture for hairlessness is ruled out , researchers postulate to test a broader range of countries , Prokop say . Earlier studies suggested women ’s hair’s-breadth predilection do disagree by country and even U.S. state , with women in the African nation of Cameroon , for lesson , preferring hairier cat , while women inChina , New Zealand and California proceed for a desolate tone . Some research even suggests women infertile phasesof their catamenial cycles are attracted to less fuzz on men than women in less - fertile phases , who favor a slightly hairy look .
" clear , more cross - cultural compare is involve to clear this question , " Prokop say .
