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The Black Pill: A Woman's Previous Sexual Partners Can Affect Her Future Offspring

It turns out that dog and horse breeders have believed for a long time that virgin animals are the best to breed and, so far as humans are concerned, it’s all downhill from there.

Read: How Previous Sexual Partners Affect Offspring (TIME)

From that article:

Crean says the idea of a female’s previous mates having an effect on their offspring isn’t unheard of. In fact, this very idea, called telegony, was proposed by ancient scholars such as Aristotle but dismissed with the advent of genetics. But new findings about epigenetics — how our behaviors, such as diet, smoking and drinking — can affect our genes and how those changes can be passed on, make the idea of such non-genetic inheritance possible.
There are studies on something called microchimerism which is the phenomenon whereby fetal cells (genetic material) pass through the placenta during pregnancy and begin a distinctly different cell lineage that can impact the woman’s health and future pregnancies for several decades. Studies have proven the phenomenon is happening in as many as 63% of women (see the 2nd study): https://www.ncbi.nlm.nih.gov/m/pubmed/16084184/

Male microchimerism was significantly more frequent and levels were higher in women with induced abortion than in women with other pregnancy histories. Further studies are needed to determine specific origins of male microchimerism in women.

2nd study: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0045592

From the “microchimerism” Wikipedia page: https://en.wikipedia.org/wiki/Microchimerism

It is hypothesized that unprotected intercourse may be another source of microchimerism, although this has not been shown definitively.

This article discusses it further:

Male DNA commonly found in women’s brains, likely from prior pregnancy with a male fetus (Science Daily)
https://www.sciencedaily.com/releases/2012/09/120926213103.htm

Then there is this study: http://rspb.royalsocietypublishing.org/content/279/1746/4423.full

They prove that seminal fluid proteins have “widespread transcriptional changes in females.” The end result is that this phenomenon triggers remarkable post-mating responses in females, including altered fecundity, feeding, immunity and sexual receptivity. These effects can favor the evolutionary interests of males while generating costs in females.

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