Biologists say the HLA genes of the immune system — which are responsible for recognizing and marking foreign cells such as viruses so other parts of the immune system can attack them — also determine body odor "fingerprints." And people tend to be attracted to the natural body odors of those who have different HLA genes from their own.In one study, Swiss biologist Claus Wedekind found that women who were not taking hormonal contraception preferred the natural scent of men whose immune systems were the most different from theirs.
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He said his site tends to attract people who are concerned about privacy and has not done a good job tracking members once they leave.
Gene Partner did not respond to a request to speak to its customers. "Nothing has worked, and I'm curious to see how this would work." Singles who sign up for Scientific get a welcome box in the mail containing a skin cells-swab kit.
Related: Why Aren't We Talking About the Millennial Mystique?
RG: The idea was to take some of the science of what makes relationships successful and apply that to the dating industry, which so far, has focused on using psychological surveys.
"How many dating services can you think of where they can suggest you might have better children?