Since hormones are what attract your mate, could changing your hormone levels make you less attractive?
Yes, it’s a possibility.
Recent studies suggest that women who use hormonal contraceptives, such as the birth control pill, have very obvious physical and behavioral changes. When a woman’s hormone levels are changed, their chemical signals that attract men are disrupted. This change in hormonal behavior changes their attractiveness to men, and causes their own preference to change such as the masculinity of men they are attracted to.
Although visual stimuli are often the first thing to draw us toward a potential mate, the majority of what causes sexual attraction is based on chemistry. Just like many other mammals, humans emit pheromones which are chemical odors that allow transmission of important information relating to sexual compatibility.
Women are attracted to men who have immune systems very different from their own. This is an evolutionary benefit to the children from this by having a much stronger immune system than either of the parents. However, women on birth control do not exhibit this preference. The problem here is that bypassing this evolutionary “screening” could result in less healthy offspring.
Another major issue is women are ovulating, there are marked physical and behavioral changes. A woman’s voice becomes pitched and her scent becomes more attractive to men. She will behave different socially, including wearing more revealing clothing, bolder makeup, and increased flirting. This is a natural behavior that attracts men at the right time to reproduce.
A woman’s personal tastes also change. During her most fertile period, a woman will become more attracted to men with very masculine features. She will be drawn to faces with more symmetry and bodies with more muscle tone. It is also possible that if her current partner is less masculine that she may become less attracted to him.
Taking any type of hormonal contraceptive can throw a wrench in the natural hormonal exchange
The subtle behavioral cues and “sexy” hormones that come into play during ovulation are a major attraction for men. The problem is that these natural aphrodisiacs are wiped out when a woman is on birth control. Also, men no longer show an increasing interest for women based on their menstrual cycle since there are no longer any cues toward reproduction.

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