How Weight Affects Fertility: What You Need to Know Before Trying to Conceive

July 26, 2025
How Weight Affects Fertility: What You Need to Know Before Trying to Conceive

When you’re planning to start a family, your weight might not be the first thing you think about—but it plays a crucial role in fertility. Research shows that both being underweight and overweight can reduce your chances of conceiving naturally or through fertility treatments like IVF.

At Sakalli IVF, we understand how deeply personal your fertility journey is. That’s why we’re here to guide you every step of the way—with science-based, compassionate care.


Why Weight Matters for Fertility

Your weight can directly affect hormonal balance, menstrual regularity, and ovulation. In both women and men, being outside a healthy weight range can make it more difficult to conceive.

In Women:

  • Irregular or absent periods
  • Poor egg quality or lack of ovulation
  • Reduced success rates with IVF or IUI treatments
  • Higher risk of miscarriage or pregnancy complications

In Men:

  • Lower sperm count and motility
  • Abnormal sperm morphology (shape)
  • Hormonal imbalances impacting sexual health

Understanding BMI and Fertility

Instead of just focusing on your weight, it’s more accurate to evaluate your Body Mass Index (BMI)—a number calculated from your height and weight.

World Health Organization BMI Guidelines:

  • BMI below 18.5 (Underweight):
    Can lead to missed periods, ovulation issues, and higher risk of preterm birth.
  • BMI 18.5–24.9 (Healthy range):
    Ideal for conception and a healthy pregnancy.
  • BMI 25–29.9 (Overweight):
  • May reduce chances of getting pregnant and complicate fertility treatments.
  • BMI 30 and above (Obese):
    Associated with:
    ▪ Higher IVF failure rates
    ▪ Poor embryo implantation
    ▪ Increased risk of gestational diabetes, hypertension, and miscarriage

Even a small weight change—losing or gaining just 5–10%—can significantly improve fertility outcomes.


What You Can Do to Improve Fertility Through Healthy Weight

The good news? Most weight-related fertility challenges are reversible with the right approach.

Our Top Recommendations:

  • Eat a Balanced Diet:
    Focus on whole foods rich in fiber, protein, healthy fats, and essential nutrients.
  • Exercise Regularly:
    Moderate activity like walking, swimming, or yoga can balance hormones and improve fertility.
  • Manage Stress:
    Chronic stress can affect ovulation and sperm health. Mindfulness, therapy, or relaxation techniques may help.
  • Seek Expert Support:
    At Sakalli IVF, our team can help you create a safe, personalized weight management plan designed for fertility success.

Personalized Fertility Support at Sakalli IVF

At Sakalli IVF, we don’t believe in one-size-fits-all solutions. If weight may be affecting your fertility, we’re here to help you take control of your health and prepare your body for pregnancy.

💛 Ready to take the next step?
Our specialists will guide you through a customized plan that fits your lifestyle, goals, and fertility needs.

📞 Contact us today for a consultation and let’s build your path to parenthood—together.


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