1. What is the Shettles Method?

The Shettles method is a gender selection technique that suggests timing intercourse relative to ovulation can influence the baby's sex. For conceiving a boy, it recommends having sex as close to ovulation as possible.

2. How Does the Calculator Work?

The calculator uses the ovulation formula:

Where:

• \( \text{LMP} \) — First day of last menstrual period
• \( \text{Cycle Length} \) — Typical length of menstrual cycle in days

Explanation: The calculator estimates ovulation by subtracting 14 days from your cycle length (the luteal phase) and adds this to your LMP date. For a boy, it recommends intercourse 1 day before ovulation.

3. Importance of Timing for Gender Selection

Details: The theory suggests male sperm (Y-chromosome) are faster but less resilient, so timing sex close to ovulation gives them an advantage to reach the egg first.

4. Using the Calculator

Tips: Enter the first day of your last period and your typical cycle length (usually 21-35 days). For best results, track your cycle for several months to determine your average length.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the Shettles method?
A: Studies show about 75% success rate when followed precisely, but many factors influence baby's sex.

Q2: What other factors help conceive a boy?
A: Some suggest alkaline vaginal environment, male fertility supplements, and specific sexual positions may help.

Q3: Should I confirm ovulation with other methods?
A: Yes, combine with ovulation predictor kits, basal body temperature tracking, or cervical mucus observations.

Q4: Does this work for irregular cycles?
A: Less reliable with irregular cycles. Consider fertility monitoring for more accurate predictions.

Q5: Are there medical gender selection methods?
A: Yes, preimplantation genetic diagnosis (PGD) with IVF is nearly 100% effective but expensive and invasive.