Other Gender Selection Methods
There are a number of gender selection techniques that claim to help a couple have a child of a desired sex. A number of these techniques are based on anecdotal rather than scientific evidence. The only proven methods with extremely high success rates approaching 99.9% accuracy for conceiving a child of either sex are PGD/PGS.
At-home methods may include timing sex, use of fluids and over the counter cold medications, diets, and vitamin and mineral supplements to influence a baby’s gender. Gender selection kits, too, offer the promise, but not the scientific basis for helping you conceive a boy or girl.
The two methods below have been around for years. However, both have been refuted as scientifically-proven methods for gender selection.
The Shettles Method
The key to the Shettles method is calculating the time of the woman’s ovulation — and then attempting conception during or before ovulation — to conceive a desired boy or girl baby. Shettles found that Y-bearing (male) sperm swim faster but don’t live as long as the bigger, hardier X-bearing (female) sperm. This method also assumes that the vaginal environment is acidic most of the time, but becomes slightly more alkaline close to ovulation, favoring boy conceptions (Y-bearing sperm).
According to the Shettles Method:
- To conceive a boy baby, a couple should have sex on the day of ovulation or 1 day before;
- For a girl baby, couples should have intercourse 2 or 3 days before ovulation.
To use the Shettles method, women must track their cycles with an ovulation predictor kit which tracks urinary levels of LH (luteinizing hormone) or by monitoring their morning temperature (basal body temperature testing).
In Ericsson’s patented method, semen is placed in a test tube on top of increasingly thicker layers of the protein albumin. Rapid spinning in a centrifugal machine causes particles in a liquid to separate into layers, based on their density. The heavier, denser X-sperm (female producers) were thought to separate from the lighter Y-sperm (male producers). Following Ericsson’s lead, researchers began reporting experiments of spinning sperm in various types of solutions, and several initially reported success in creating all X- or all Y-sperm samples. The best known is Ericsson’s albumin method, possibly the only sperm-spinning method still used today. Once separated, couples desiring a male baby have their doctor inseminate the prospective mother with the X or Y sperm. Ericsson has claimed a 78% to 85% success rate for boys, 73% to 75% for girls.
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