Known as a pioneer in fertility treatments, Dr. Shettles based his methods around the belief that the X-bearing and Y-bearing sperm characteristics differ and you can use these differences to learn how to conceive a boy.
The baby making chromosome math is X + Y = boy or X + X = girl. The egg from the mother is X-bearing and the sperm from the father is either X-bearing or Y-bearing.
According to his theory, boy producing Y-bearing sperm are faster but more fragile than girl producing X-bearing sperm and are less viable in acidic environments. The Shettles Method seeks to exploit these differences and show you how to conceive a boy by focusing on 3 areas: The timing of sexual intercourse; the most effective sexual positions to conceive a boy; and whether a woman should have an orgasm during sex.
How To Conceive A Boy
In order to maximize the chances you will conceive a boy, insemination should occur as close to the time of ovulation as possible. Ideally you should have intercourse 6-12 hours before ovulation occurs. This will exploit the greater speed of the Y-bearing sperm and increase the probability that one of them will arrive first to impregnate the awaiting egg. Since the Y-bearing sperm are the more fragile, timing is an important factor. Having sex too far from ovulation will increase the chances of conceiving a girl.
Dr. Shettles research showed that the proper sexual positions were key to knowing how to conceive a boy. He concluded that using positions that allow deep penetration will aid your efforts. Depositing the more fragile Y-bearing sperm close to the uterus opening provides distinct advantages that will increases the chances you conceive a boy: They are faster moving than the X-bearing sperm and the area near the uterus opening is less acidic providing a relative advantage to the more fragile Y-bearing sperm over other areas of the vagina. For obvious reasons (gravity!), positions with the woman on top will be less effective than if the man is on top at, and after, ejaculation.
If this all seems a little clinical then the final component of the Shettles method to knowing how to conceive a boy will undoubtedly be more fun. The female orgasm. The woman should definitely have an orgasm—ideally at the same time as the man. Far from being just a pleasant benefit of sex, female orgasms will actually favor the Y-bearing sperm since they make the vaginal environment less acidic and cervical fluids more plentiful. This is more hospitable to the more fragile Y-bearing sperm and will increase the probability you conceive a boy.
There are many stories of successful baby gender selection using the Shettles Methods. The evidence is mostly anecdotal and does not conclusively prove the effectiveness of the theory.
What is clear is that Dr. Shettles research and methods have influenced some of the most successful baby gender selection programs focused on how to conceive a boy.
While some questions may remain, the success of happy parents is hard to dispute. They say by following the Shettles method you can learn how to conceive a boy.