New 2025 Study Confirms: Baby’s Gender Isn’t Just 50/50 Chance — and What It Means If You’re Hoping to Conceive a Girl 💖

We’ve always said it — your baby’s gender isn’t just a coin toss.

And now, fresh research from July 2025 adds even more weight to that view.

A groundbreaking study published in Science Advances analysed data from over 58,000 women across nearly 60 years. It found that families often have their own unique “gender probability” — meaning some naturally lean toward having more girls, others more boys.

While the sperm ultimately carries the X or Y chromosome, it’s the mother’s body — especially her egg and reproductive environment — that can tip the scales toward one outcome or the other.

Key Findings from the Study

1️⃣ Maternal Age Shapes Patterns

Women who began having children after age 28 were more likely to have multiple children of the same sex.

Example: Three girls? The chance of a fourth girl rose to ~58%.

Three boys? ~61% for another boy.

2️⃣ Genetics Hold Clues

The study identified maternal genetic variants linked to whether X-carrying or Y-carrying sperm are more likely to succeed.

3️⃣ Patterns Can Run in Families

Gender tendencies weren’t random in each pregnancy — they could be seen across siblings and even generations.

4️⃣ Odds Still Average Out Globally

Worldwide, the ratio stays close to 50/50 — but within individual families, the numbers can shift significantly.

Why This Matters for Gender Swaying and Your Chance to Conceive A Girl 💖

This study backs up what over a decade of research at Sway natural has shown — the mother’s biology plays a central role in influencing gender odds. And one of the most consistent, well-supported ways to influence that biology?

Diet and nutrient balance.

Adjusting the levels of calcium, magnesium, potassium, and sodium in your diet can help shape an internal environment that gently favours either a girl or a boy. When you combine these diet-based methods with other factors like age, timing, and family patterns, you’re working with your body’s natural tendencies — not against them.

💡 The Takeaway:

Your baby’s gender isn’t set in stone — and it’s not purely chance. Your biology already plays a role, and with the right nutrition and lifestyle approach, you can give nature a gentle, science-backed nudge in the direction you’re hoping for.

👉 Ready to sway the odds?

Start your personalised Girl or Boy Sway Plan today and use the science to your advantage. 💖💙

Your Sway Plan

Disclaimer: These methods are based on research and are not guaranteed to determine gender. Always consult with a healthcare professional for medical advice.