.- The pill is not only causing a massive shift in who women are attracted to, but is also wreaking havoc on their bodies, men and the environment. What's more? Biochemical research can prove it, says one critic.

“Chemical contraceptives were first introduced as being good for our bodies,” said Vicki Thorn, founder of Project Rachel and the National Office for Post Abortion Reconciliation and Healing.

“There was very little research that was done when chemical contraception first became available.”

Thorn spoke Nov. 6 on the topic of “The Science of Attraction: A New View on Sex” at the Aquinas Institute for Catholic Thought, an intellectual arm of ministry on the campus of CU Boulder, Colorado.

She said that in the wake of activist Margaret Sanger's birth control movement in the early 20th century – which sought legalization and widespread availability of the pill – society has been largely bereft of the knowledge on exactly what chemical contraception does to the female body.

And yet – according to Thorn – nutritional deficiencies, weight gain, blood clots, cancer, sexually transmitted diseases, long term infertility, and de-mineralization causing osteoporosis are all direct side effects of birth control.

Most of the 68 million women using contraception today don't know that, she said.

In addition to the physical side effects, Thorn believes that contraception also influences a woman's attraction to a man.

“When women meet men, they are either attracted or not attracted by scent. If a woman is not contracepting, she will be attracted to a male whose immune system is a compliment to hers – this is the possibility for fertility,” Thorn stated.

On the other hand, Thorn said that when a woman is contracepting, her pheromone preference will change, and she may now be attracted to a man whose immune system is like her own, her father's, or her brother's.

“This is a fertility challenge and a huge issue because if she goes off contraceptives, she may no longer find him attractive,” Thorn said, adding that this could be the culprit behind many destroyed relationships.

Chemical contraception, she added, is not only a major steroid hormone listed as a type one carcinogen, it can also affect the attraction a woman feels toward her partner. While sports players are not allowed to take steroids, women are using steroids in birth control every day without fully knowing what it can do to the chemical make-up of her body, she said.

Beyond this, Thorn also believes that contraception is flat-lining the way men interact with women.

“There is estrogen in the water now. Male fertility has dropped by 50 percent after the pill was introduced, around the world.”

Thorn referred to various studies done on monkeys, which have shown that males are more interested in females who were not contracepting.

She believes that this study applies to humans as well. The way a woman’s body works naturally engages the male, causing him to be more interested and connected, she observed. However, a woman who is chemically altering her body’s natural flux will not engage a male in the same way.

“But we aren't told these things,” she said.

Thorn also believes that from a biochemical standpoint, humans were not meant to have multiple sexual partners. She explained that the chemistry of bonding is awakened in the human body during sexual activity, which is meant to connect one person to one other person. Chemically, Thorn said, having sex with multiple partners is a complex and unnatural occurrence.

Complexities also transpire when a woman conceives a child, given that every woman carries the cells of every child that has been conceived in her womb. Consequently, her children will also carry the cells of their older siblings, which has a tremendous affect on women who have had abortions, Thorn said.

“This is an awareness of how interconnected we really are, in many ways.”