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Methods such as Shettles and O+12, as well as many online forums, focus on how pH levels within the woman’s body affect cervical mucus. A more alkaline environment is supposed to be more favourable for Y sperm (male), while X sperm (female) are supposed to be more resilient in an acidic environment.
Boy and girl pH diets aim to alter the pH of cervical mucus. Girl-sway diets are high in calcium, cranberry and magnesium, whereas the boy-sway diets are rich in potassium, sodium and starchy carbohydrates.
pH balance sway methods involve swabbing your cervical mucus with litmus paper and monitoring and tracking your balance around the time of ovulation.
Many online forums recommend douching to give the vagina an extra pH boost when trying to conceive. For a boy, an alkaline douche is recommended, such as baking soda mixed with water. For a girl, an acidic douche is recommended, such as lemon or lime juice mixed with water.
What our experts say on pH environment
Based on a female’s composition, a higher acidic pH balance favours X sperm and kills off the weaker boy sperm, helping girl sperm to reach the egg first, while higher alkalinity gives boys a greater chance of survival and thus greater chance to fertilize the female egg.
On its own, alterations to diet and supplementation would not be strong enough to adjust the vaginal pH to conceive the baby of your preferred gender, but alongside other methods, it definitely increases your chances of conceiving the gender you desire.
We recommend a combination of methods including pH diets and supplementation, tracking ovulation, the frequency of intercourse, sexual positions and exercise. Though douching is a quick and easy way to adjust pH, there are risks to the natural bacteria that keep your vagina healthy. We cannot recommend douching, but we can back up the science behind the theory.