Sishu Fertility Clinic

How does age affect the IVF success?

In the field of assisted reproductive technology (ART), In Vitro Fertilization (IVF) offers a valuable option for couples facing infertility. However, various factors influence IVF success rates, with age being one of the most significant. This blog post explores the intricate relationship between age and IVF success, examining how age impacts fertility and what individuals can expect at different stages of their reproductive journey.

Understanding Fertility and Aging

Fertility is a complex interplay of biological, hormonal, and environmental influences. While some individuals conceive naturally with ease, others may face challenges due to various factors, including age.

For women, fertility naturally declines with age, with a more pronounced decrease typically observed after 35. This decline is primarily attributed to a decrease in the quantity and quality of available oocytes (eggs). As women age, their ovarian reserve diminishes, making it more challenging to conceive naturally and through assisted reproductive technologies like IVF.

Impact of Age on IVF Success

While the age of both partners can influence IVF success rates, female age tends to be the primary determinant. Here’s a breakdown of how age affects IVF success:

  • Ovarian Reserve: Younger women generally have a higher ovarian reserve, meaning they produce more high-quality eggs. This abundance of healthy eggs can lead to better IVF outcomes, including higher fertilization rates and more viable embryos for transfer.

  • Egg Quality: As women age, the quality of their eggs declines, increasing the likelihood of chromosomal abnormalities and failed fertilization. Poor egg quality can decrease the chances of successful embryo implantation and pregnancy.

  • Response to Ovarian Stimulation: During IVF, women undergo ovarian stimulation medications to produce multiple eggs for retrieval. Younger women tend to respond better to these medications, resulting in a greater number of mature eggs compared to older women.

  • Pregnancy Rates: IVF success rates, including pregnancy rates per cycle, tend to decrease with advancing female age. While women under 35 may have success rates of around 50-80% per cycle, those over 40 may experience success rates below 20-40%.

    Here’s a general idea of how IVF success rates vary by age (using your own eggs):

      • Under 35: Success rates are highest, around 60%.
      • 35-37: Success rates decline slightly, to around 34%.
      • 38-40: Success rates drop further, to around 26%.
      • 41-44: Success rates become much lower, around 18%.
      • 44 and above: Live births with a woman’s own eggs are very uncommon.

It’s important to remember these are averages. Individual factors can influence your success rate.

    • Miscarriage Risk: Older women undergoing IVF have a higher risk of miscarriage due to age-related factors such as chromosomal abnormalities in embryos. This risk increases significantly after the age of 40.

How Older Individuals can increase the chances of IVF success?


While age-related fertility decline can present challenges, there are strategies that older individuals can consider to optimize their chances of IVF success:

  • Preimplantation Genetic Testing (PGT): PGT can help identify chromosomally normal embryos, reducing the risk of miscarriage and improving the likelihood of a successful pregnancy, particularly for older women.

  • Donor Eggs: For individuals with diminished ovarian reserve or poor egg quality, using donor eggs from younger, fertile individuals can significantly improve IVF success rates.

  • Lifestyle Factors: Adopting a healthy lifestyle, including regular exercise, a balanced diet, and avoiding tobacco, alcohol, and excess caffeine, can positively impact fertility outcomes, regardless of age.

  • Consultation with Fertility Specialists: Seeking guidance from experienced fertility specialists can provide personalized insights and treatment options tailored to individual circumstances.


Age plays a pivotal role in determining the success of IVF treatment. While advancing age may pose challenges to fertility, technological advancements and personalized approaches in assisted reproductive medicine offer hope to individuals seeking to build their families. 

By understanding the impact of age on IVF success rate and exploring available options with Sishu Fertility Clinic, you can start on your fertility journey with decision-making and realistic expectations. 

Contact Sishu Fertility Clinic today for a free consultation and take the first step towards your dream of parenthood.

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