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你们# 8217年代,不同类型的口服避孕药与性行为之间的关系

2018-09-26 08:51

pills

Credit: Pixabay

Like all beings, humans have *** to bear offspring。 However, unlike most animals that need to go into heat to have ***, we find it enjoyable and interesting all year-round。 This behaviour is no coincidence, according to a new ***** that suggests being interested in *** all the time acts like a ‘;glue’;, creating pair bonds between partners。 Presumably, this behaviour has been fostered by evolution。 The same study also identified a link between the various types of oral contraceptives and how often couples have ***。

Why *** is important

Researchers from the University of New Mexico previously used a dataset comprised of 50 women and their partners。 The pairs had to answer a series of questions about their relationships, menstrual cycles, and how often they had ***。 No woman involved in this study was using hormonal contraceptives a。k。a。 ‘;the pill’;。

Generally, women were interested in having *** more in the extended ***ual phase, when they were not ovulating and the dominant hormone was progesterone。 The findings held strong only when the women were invested in the relationship。

A team from the Norwegian University of Science and Technology (NTNU) repeated the experiments performed by their American colleagues, only this time the female participants were all using oral contraceptives。 All women used a type of contraceptive that contained hormones that induced a natural cycle。

The findings were remarkably similar to the original study, showing that how often women are interested in *** is linked to how committed they feel towards their partner。

“;The function of *** in humans outside ovulation is an evolutionary mystery。 But we believe that it has to do with binding the parties in the relationship together,”; says Leif Edward Ottesen Kennair, a professor of psychology at NTNU。

This association was true when the contraceptives had high levels of synthetic hormones that mimic the effects of the natural hormone progesterone, but lowers the levels of estrogen。

“;We’;re talking about intercourse here, not other types of *** like oral ***, masturbation and such。 This strengthens the idea that *** outside the ovulation phase has a function besides just pleasure,”; says study co-author Trond Viggo Grøntvedt。

How contraceptives affects *** drive

The findings were not the same, however, when other types of hormonal contraceptives were involved。

本文源自: AG环亚国际官网

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