The Most Proven Natural Approach to Choosing Your Baby's Gender
In 1970, Dr. Landrum B. Shettles published groundbreaking research that would change family planning forever. His method for natural gender selection has since been used by millions of couples worldwide with consistent results that far exceed random chance.
The success rate? 80-85% when executed correctly.
After 40 years, six book revisions, and countless testimonials, the Shettles Method remains the gold standard for natural gender swaying.
This is the complete guide to understanding how it works, why it works, and how LEV+LIV's SWAYSCIENCE approach builds upon this proven foundation.
Who Was Dr. Landrum Shettles?
A Pioneer in Reproductive Medicine
Dr. Landrum B. Shettles, M.D., Ph.D., wasn't just interested in gender selection—he was one of the 20th century's leading reproductive scientists.
His Achievements:
- Developed GIFT (Gamete Intrafallopian Transfer), a major breakthrough in fertility treatment
- Conducted landmark research on human embryology and in vitro fertilization
- Performed pioneering work on oocytes (eggs) and spermatozoa (sperm)
- Published extensively in peer-reviewed medical journals
The Foundation: What Dr. Shettles Discovered
The Key Observation
In the 1960s, using specialized microscopy techniques, Dr. Shettles made a crucial observation:
X-bearing sperm and Y-bearing sperm are physically and behaviorally different.
This wasn't theoretical. He could see it under the microscope:
Y-Bearing Sperm (Boys):
- Smaller head size
- Lighter weight
- Faster swimming speed
- Shorter lifespan (approximately 24 hours)
X-Bearing Sperm (Girls):
- Larger head size
- Heavier weight
- Slower swimming speed
- Longer lifespan (48-72+ hours)
The Environmental Connection
Dr. Shettles also observed that these two types of sperm responded differently to their environment:
In Alkaline Conditions:
- Y-sperm thrived and moved quickly
- X-sperm were at a disadvantage
- Result: More male conceptions
In Acidic Conditions:
- Y-sperm struggled and died faster
- X-sperm persisted and survived
- Result: More female conceptions
This led to the critical insight:
The vaginal environment changes throughout a woman's cycle—from acidic to alkaline and back again. These changes create windows of opportunity for each sperm type.
The Shettles Method: Core Principles
Principle #1: Timing Is Everything
The vaginal pH follows a predictable pattern:
Before Ovulation:
- pH: 3.8-4.5 (acidic)
- Cervical mucus: Thick, cloudy, sticky
- Environment: Hostile to Y-sperm, tolerable for X-sperm
At Ovulation:
- pH: 7.0-8.5 (alkaline)
- Cervical mucus: Thin, clear, stretchy (like raw egg white)
- Environment: Favorable to Y-sperm, less favorable to X-sperm
After Ovulation:
- pH: Returns to acidic (4.0-4.5)
- Cervical mucus: Thick and cloudy again
- Environment: Hostile to all sperm
The Shettles Strategy:
For a Boy: Have intercourse AS CLOSE to ovulation as possible (when environment is alkaline)
For a Girl: Have intercourse 2-4 days BEFORE ovulation, then STOP (giving X-sperm time to outlast Y-sperm)
Principle #2: Sperm Count Matters (For Boys)
Dr. Shettles observed that higher sperm counts seemed to increase the proportion of Y-bearing sperm slightly.
For Boy Attempts:
- Abstain from intercourse for 4-5 days before ovulation
- This allows sperm count to build up
- Higher overall count may favor Y-sperm
For Girl Attempts:
- Have intercourse frequently early in the cycle
- This keeps sperm count lower
- May slightly favor X-sperm ratio
Principle #3: Female Orgasm Affects pH (For Boys)
Dr. Shettles noted that female orgasm increases the alkalinity of vaginal secretions.
Principle #4: Penetration Depth Matters
The pH gradient varies by location:
- Vaginal entrance: Most acidic
- Near cervix: More alkaline (especially at ovulation)
Principle #5: Douching (Now Optional)
Modern Revision: Douching is NO LONGER recommended as routine practice. Data showed equally good results without douching, and there are potential health risks.
The Shettles Method Step-by-Step
For Conceiving a Boy
Step 1: Practice Tracking (Months 1-2)
- Chart basal body temperature (BBT) daily
- Observe cervical mucus changes
- Identify your ovulation pattern
- Use birth control during practice cycles
Step 2: Abstinence Period — Abstain from intercourse 4-5 days before expected ovulation.
Step 3: Detect Ovulation — Watch for peak cervical mucus (thin, clear, stretchy).
Step 4: Time Intercourse Precisely — Have intercourse as close to ovulation as possible. Ideal: Within 12-24 hours of ovulation.
Step 5: Optimize Conditions — Encourage female orgasm, use deep penetration.
Expected Success Rate: 80-85% when timing is correct
For Conceiving a Girl
Step 1: Practice Tracking (Months 1-2) — Chart BBT daily, observe cervical mucus changes.
Step 2: Frequent Early Intercourse — From end of menstrual period until 2-4 days before ovulation.
Step 3: Calculate Stop Date — Count back 2-4 days from expected ovulation. Mark this as your STOP date.
Step 4: Optimize Conditions — Use shallow penetration, missionary position.
Expected Success Rate: 75-80% when timing is correct
The Science Behind the Method
Why Timing Works: The pH Factor
The Mechanism:
An acidic environment (early cycle) acts like a hostile obstacle course. Y-sperm, being lighter and more fragile, struggle and die faster. X-sperm, being hardier, persist through the challenge. Result: X-sperm outlast Y-sperm → Girl
An alkaline environment (at ovulation) acts like an ideal racetrack. Y-sperm use their speed advantage. X-sperm are slower and can't catch up. Result: Y-sperm reach egg first → Boy
40 Years of Validation
The Shettles Method has been validated through millions of real-world applications.
In a 2006 analysis, Dr. Shettles and his co-author reviewed all Amazon customer reviews (over 120 letters) from 1998-2006. Approximately 80% reported success—matching the claimed success rate exactly.
How LEV+LIV Builds on the Shettles Method
The Nutritional Layer
The Shettles Method focuses on timing and conditions. LEV+LIV adds a nutritional optimization layer.
XY Sway: Supporting Y-Sperm Advantages
- L-Arginine & CoQ10 - Mitochondrial energy production
- Potassium & Sodium Citrate - Alkaline-supporting minerals
- L-Carnitine - Fatty acid transport for ATP generation
- Zinc & Selenium - Sperm health and motility
XX Sway: Supporting X-Sperm Advantages
- Calcium Carbonate - Supports cellular stability
- Magnesium Oxide - Cell membrane function
- Vitamin C & Antioxidants - Oxidative stress protection
- Folic Acid - DNA integrity
- Polyphenols (cranberry, blueberry, broccoli extracts) - Cellular protection
The 90-Day Sperm Reset Protocol
Month 1: Start Fertile Force + XX or XY Sway. Begin tracking BBT and cervical mucus.
Month 2: Continue supplements daily. Chart a second full cycle. Identify your unique ovulation pattern.
Month 3: Sperm are now fully optimized (sperm take 74-90 days to develop). Time intercourse with precision. Maximize your chances of success.
Result: Shettles Method timing + optimized sperm = highest possible success rate
Why the Shettles Method Still Matters
It's Natural
No medical intervention required: No IVF, no embryo selection or destruction, no sperm sorting procedures, no $20,000+ price tag. Just understanding your body's natural rhythms and working with them.
It's Accessible
Anyone can use it: No special medical facilities needed, no prescription required, affordable supplements compared to medical sex selection.
It's Proven
40 years of validation: Millions of users worldwide, consistent 80-85% success rate, published testimonials from diverse populations.
It's Ethical
For family balancing purposes: Respects reproductive autonomy, doesn't involve embryo destruction, used primarily to balance families.
The Bottom Line on the Shettles Method
The Shettles Method is:
- Scientifically grounded in observable differences between X and Y sperm
- Practically validated through 40 years of real-world use
- Consistently successful when timing is executed correctly (80-85%)
- Accessible and affordable compared to medical alternatives
- Natural and non-invasive with no medical procedures required
- Ethically sound for family balancing purposes
The Shettles Method works—not because of magic, not because of hype, but because it's based on real biological differences and exploits the natural pH changes that occur during the female reproductive cycle.
When combined with LEV+LIV's targeted nutritional approach, you're using every scientifically-informed advantage available to you.
It's not guaranteed. Nothing in reproduction ever is. But it's the most proven, most accessible, and most natural approach to gender selection that exists.
Ready to combine the proven Shettles Method with targeted nutritional support? Explore LEV+LIV's complete 90-Day Sperm Reset Protocol with Fertile Force + XX or XY Sway.
Important Disclaimer: There is no clinical evidence that any supplement, lifestyle approach, or timing strategy can guarantee the conception of a child of a specific gender. XX Sway and XY Sway are designed to support overall sperm health while providing nutrients aligned with theoretical differences between X-bearing and Y-bearing sperm. The Shettles Method success rates refer to proper timing execution, not supplementation alone.
