stupid online dating questions - Birth control and dating

When individuals with different MHC genes mate, their offspring's immune systems can recognize a broader range of foreign cells, making them more fit.

Past studies have suggested couples with dissimilar MHC genes are more satisfied and more likely to be faithful to a mate.

What is clear is that the drug had a far greater impact within marriage itself.

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That's because beneath a woman's flowery fragrance or a guy's musk the body sends out aromatic molecules that indicate genetic compatibility.

Major histocompatibility complex (MHC) genes are involved in immune response and other functions, and the best mates are those that have different MHC smells than you.

In the process of tricking a female body into thinking it's pregnant, oral contraceptives may discretely alter heterosexual women's attraction to men and vice versa.

Although none of the following five birth control-related reactions pose any direct risk to women, they're fascinating examples of how a single, tiny egg can make a monthly difference.

Birth-control pills could screw up a woman's ability to sniff out a compatible mate, a new study finds.

While several factors can send a woman swooning, including big brains and brawn, body odor can be critical in the final decision, the researchers say.

And the opposite is also true with matchng-MHC couples showing less satisfaction and more wandering eyes.

"Not only could MHC-similarity in couples lead to fertility problems," said lead researcher Stewart Craig Roberts, an evolutionary psychologist at the University of Newcastle in England, "but it could ultimately lead to the breakdown of relationships when women stop using the contraceptive pill, as odor perception plays a significant role in maintaining attraction to partners." Sexy scents The study involved about 100 women, aged 18 to 35, who chose which of six male body-odor samples they preferred.

But, according to historian Elaine Tyler May, this idea is largely a myth.

As May explained to a Stanford audience, the pill’s impact on the sexual revolution is unclear.

Picking a partner while on the Pill might have lasting ramifications on marital satisfaction, new research finds.

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