The Shettles Method is a well-known notion of conception of children to help determine the sex of the baby. It was developed by Landrum B. Shettles in the 1960s and published in the book How to Choose Your Baby's Gender, written by Shettles and David Rorvik. This book was first published in 1971 and has been printed in various editions since then.
By following the various methods outlined in this book, it is proposed that spouses may influence the possibility of having a boy or girl. Proponents claimed effectiveness between 75 and 90 percent, but experts disagree that this method works; for example, the 1995 article 'Time of Sexual Relations in Relations with Ovulation - Effects on Possible Conceptions, Pregnancy Sustainability, and Baby Sex', in the New England Journal of Medicine concluded that "for practical purposes, its association with ovulation has no effect on the sex of the baby. " This, however, contrasts with a much larger previous study of the New England Journal of Medicine (1979) which concludes that "[our] results... show insemination on different days of the menstrual cycle do cause variation in sex ratio. "With such conflicting results, it appears that more research is needed to determine whether the time of insemination affects the sex of a baby.A 2006 letter published by BMJ, reviewing some recent studies, attempts to clarify the issue. that "So far, researchers have found no morphological differences between the human X sperm and the Y sperm", which seem to ignore the original claims of the Shettles Method.
Video Shettles method
Drafts
According to the theory, male sperm (Y) is faster but more fragile than female sperm (X). Furthermore, the acidic environment compromises the sperm Y, in theory, making a girl's conception more likely. The Shettles method aims to exploit these two factors.
The Shettles method differs from the method of Ericsson, where semen is deposited outside the woman and time is given for swimmers who are slow/slow to separate before artificial insemination occurs.
Intercourse Time
To have a son, insemination must occur as close as possible to the moment of ovulation so that faster, the Y-sperm arrives first and reaches conception, according to theory. When looking for a girl, couples should have sex 2½ to 3 days before ovulation.
Sexual Position
Shallow penetration coupled with sperm stored close to the entrance supports the conception of women because the area is more acidic, which inhibits the weaker Y sperm, according to theory. To allow the Y sperm, which should move faster, to reach the egg first, use deeper penetration to store the sperm in the most acidic area near the opening of the uterus. Sexual intercourse must occur from 5 am and continue every 2 hours during the ovulation period. Eggs are more likely to be fertilized before 7 am known as "peak period".
Maps Shettles method
References
Source of the article : Wikipedia
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