Studies confirm biblical premise that a man and woman become one flesh after sexual intercourse

Studies confirm an ancient biblical premise that a man and woman become one flesh after sexual intercourse

In the book of Mark, chapter 10:7-8, Jesus answers a question surrounding the matter divorce in a peculiar manner, by saying that a man and woman become one flesh, after sexual intercourse (marriage). What the people at the time didn’t know is that Jesus was actually talking about microchimerism. So, what is microchimerism, and how the phrase “ become one flesh” describes it perfectly?

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Male Microchimerism is the presence of a small number of cells that originate from another individual and are therefore genetically distinct from the cells of the host individual. It is common knowledge that during pregnancy, genetic material and cells are bi-directionally exchanged between the fetus and mother, following which there can be persistence of the foreign cells and/or DNA in the recipient, and this his naturally acquired microchimerism. So, mothers and babies share cells through life.

A study that aimed to observe the incidence of male microchimerism in human female brain, found through the brain autopsy of 26 healthy female donors and 33 woman who had Alzheimer’s disease, that male microchimerism was present in multiple brain regions. Results also suggested lower prevalence and concentration of male microchimerism in the brains of women with Alzheimer’s disease than the brains of women without neurologic disease.

But scientists found even more interesting facts on male micromerism, as described bellow:

Now, that scientists established that male microchimerism can be acquired during pregnancy by the exchange of DNA material with the male fetus, a quantitative assessment and correlation with pregnancy history was done, in order to pinpoint whether woman without sons had male microchimerism. In this study, Y-chromosome-specific real-time quantitative polymerase chain reaction was used to test peripheral blood mononuclear cells of 120 women (49 healthy and 71 with Rheumatoid Arthritis). Women were categorized into 4 groups according to pregnancy history. Group A had only daughters (n = 26), Group B had spontaneous abortions (n = 23), Group C had induced abortions (n = 23), and Group D were nulligravid (n = 48).

The results were interesting, as male microchimerism was found in 21% of women overall. But male microchimerism prevalence was significantly greater in group C (induced abortions). Scientists concluded therefore, that if a woman has not had any sons, the only ways that she would have acquired male microchimerism are as follows: unrecognized spontaneous abortion, vanished male twin, an older brother transferred by the maternal circulation, or sexual intercourse.

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In yet another study, scientists wanted to examine the presence of male microchimerism in a cohort of healthy nulliparous Danish girls aged 10–15 yrs old, using DNA extracted from cells from whole blood (buffy coats) and report the association with potential sources of male cells.

A total of 154 Danish girls were studied of which 21 (13.6%) tested positive for male microchimerism. But the girls were more likely to test positive to microchimerism if their mothers had: a) previously received transfusion 2) had given birth to a son or 3) had a spontaneous abortion. Furthermore, the oldest girls were more likely to test positive for male microchimerism. In conclusion, data suggest that male microchimerism in young girls may originate from an older brother either full born or from a discontinued pregnancy or from transfusion during pregnancy. It was speculated that sexual intercourse may be important source.

So, now that the biblical premise that a man and woman become one flesh after sexual intercourse has been officially scientifically prove, what should be the next frontier of research on microchimerism?

Certainly more in depth studies should be conducted on whether the wave of spontaneous abortions or birth defects may be affected by accumulating DNA from different sexual partners over the years or multiple induced abortions. Also, whether there are positive health benefits of fetal microchimerism for the mother's long term health.

It is worth considering in the light of such knowledge, that perhaps when Jesus said man and woman become one flesh, he knew exactly what he was talking about and the ramifications of it. An equally important consideration is that perhaps certain ancient premises that forbid promiscuity, and other sexual practices are actually put in place for our own health benefit.

If you are pregnant, planning to be or are in a delicate pregnancy due to previous complications, you may want to read more on pregnancy nutrition, how your emotions affect the baby and that certain miscarriages may be caused by auto-immune diseases.

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