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What are the chances of success with IVF?

pregnant woman holding paper with baby on the way message

Introduction: The journey to conception can be a challenging and emotional experience for many couples. With around one in seven couples facing difficulties in conceiving, it’s no surprise that many turn to medical interventions such as in vitro fertilization (IVF). As the leading fertility clinic in Bangkok, we understand the myriad of emotions and questions that come with this process. One of the most pressing questions is undoubtedly the chance of success with IVF. In this article, we delve into the various factors that influence IVF success rates, including age, lifestyle choices, and the quality of treatment, alongside some important considerations for couples embarking on this path.

Problems Conceiving and Seeking Medical Advice

It is estimated that around one in seven heterosexual couples have problems conceiving with most couples seeking medical advice if they have been trying without success for between one and two years. For a couple to be classed as actively trying for a baby, they would need to be aiming to have regular unprotected sexual intercourse which is normally classed as two or three per week. If pregnancy doesn’t occur naturally within a year, it may mean that one or both partners have some fertility issues.

If fertility problems go untreated, it can cause tension in the relationship, anxiety, depression and, of course, stress. As the leading fertility clinic in Bangkok, we understand the emotions that you will be experiencing. We look at all the available options which may include some relatively simple lifestyle changes or it may involve more extensive treatment such as in vitro fertilisation (IVF).

First Fertility doctor explains the process.

First Fertility doctor explains the process.

Considering IVF Treatment

Naturally, one of the first questions that people ask with IVF is what their chance of success is? Age is a big factor. Although there are many factors which people believe affect the chances of success with IVF treatment, the only one that has been scientifically proven is age. Just as in nature, younger women have an increased chance of becoming pregnant via IVF when compared to women over the age of 35. In many countries, IVF is not recommended for women over 42 years old as the chances of getting pregnant are relatively low. As IVF treatment is expensive, it is deemed not ethical to recommend such treatment.

According to figures provided by the UK’s Human Fertilisation and Embryo Authority (HFEA), the chances of success by age are as follows:

  • Women under 35: 29%
  • Women aged 35 – 37: 23%
  • Women aged 38 – 39: 15%
  • Women aged 40 – 42: 9%
  • Women aged 42 – 44: 3%


The figures above refer to couples that use the woman’s own eggs and the male partner’s sperm.

Maintaining a Healthy Lifestyle

If you are considering IVF treatment, both partners must do all they can to maintain a healthy lifestyle both before and during the treatment. It is particularly relevant for the female partner, but the quality of the partner’s sperm and semen may also be affected. Also, it helps to offer emotional support at a time when everyone will be under a lot of stress and strain.

Naturally, it is crucial to maintain a healthy BMI, avoid alcohol, tobacco products, non-prescription drugs and where possible, caffeine. If you both manage to achieve this, it will greatly increase your chances of IVF treatment being a success. Although it may not sound easy, you should try, where possible, to keep stress levels to a minimum as this too will increase your chances of success.

Number of IVF Cycles

Several factors may influence how many cycles you can have, not least the financial burden that IVF will inevitably place upon you and your family. It is widely suggested that women under the age of 40 who have been trying to get pregnant for two years should have up to three cycles of IVF treatment. However, this will be reviewed on a case by case basis by the medical professionals.

We always like to make sure that our patients are made aware that the chances of success decline with each cycle. Being mentally prepared for IVF not to work is a critical element when making choices regarding the treatment. If the doctors feel that your emotional wellbeing will be adversely affected in the long-term should the treatment fail, they may suggest that you should stop, at least for a few months.

There are several reasons why three cycles are suggested, but the most relevant one for most couples is that it significantly increases their chances of conceiving. Indeed, it is estimated that for an otherwise healthy couple, under the age of 35, that they have between a 45-53% chance of conceiving if they undergo three full cycles.

It should be stressed that this is the cumulative figure and that even couples with “normal” fertility levels only stand a 20% chance of getting pregnant each month.

The Quality of the Treatment

Sadly, another significant factor affecting the success of IVF treatment is the quality of the treatment. Unfortunately, some clinics and some doctors are better than others, and in a country such as Thailand, the legislation that is in place may not be as strict as in other countries.
At First Fertility, we have state-of-the-art facilities, and all of our medical professionals have received the highest levels of training. It is therefore essential that you conduct your own due diligence on fertility clinics in Bangkok.

Pregnant woman with husband and ultrasound.

Pregnant woman with husband and ultrasound.

Timing of the Treatment

Unfortunately, many couples wait too long before they seek the medical help that they need. While this is understandable and there are likely to be several reasons why, we can’t emphasize enough that you should seek professional advice as soon as you have any concerns.

Once you know if you have a problem, then you can then start to make plans about how you will move forward. If it is something straightforward, your worries will have been unnecessary, but if it is something more serious, you can get the treatment that you need. The sooner you start the treatment, the greater the chances of success.

Maintaining Positive Relationships

Finally, one problem that we see all too frequently in our clinic is either partners blaming themselves for fertility issues or blaming each other. Blame really is futile, and it will not solve the problem, and in most cases, it will only make matters worse. If you are serious about becoming pregnant, you need to work together and be strong for each other.

Contact Us

If you would like to know more about IVF treatment in Bangkok or indeed any other fertility treatment in Bangkok, then you can contact us in complete confidence. Anything which you tell us will be kept confidential.

Conclusion: Navigating the complexities of infertility can be incredibly challenging for couples, but understanding the factors that affect IVF success can provide clarity and hope. Age, lifestyle, the number of treatment cycles, and the quality of care all play significant roles in the chances of conception. It is crucial to seek professional advice early on and approach the journey with a supportive and united mindset. Remember, you are not alone in this; our expert team at First Fertility is here to help guide you every step of the way towards fulfilling your dream of parenthood.

FAQs: Frequently Asked Questions

1. What Factors Affect the Success Rate of IVF?

Age is the most significant factor influencing the success rate of IVF. Women under 35 have the highest success rate, which declines with age. A healthy lifestyle, the quality of treatment, and the number of IVF cycles also play important roles.

2. What Are the IVF Success Rates by Age?

Answer: According to the UK’s Human Fertilisation and Embryo Authority (HFEA), the success rates are:

  • Women under 35: 29%
  • Women aged 35-37: 23%
  • Women aged 38-39: 15%
  • Women aged 40-42: 9%
  • Women aged 42-44: 3%

These figures are for couples using the woman’s own eggs and the male partner’s sperm.

3. How Can Lifestyle Choices Affect IVF Success?

Maintaining a healthy lifestyle is crucial. This includes having a healthy BMI, avoiding alcohol, tobacco, non-prescription drugs, and reducing caffeine intake. Stress management and emotional support are also essential for both partners.

4. How Many IVF Cycles Are Recommended?

It’s suggested that women under 40 who have been trying to conceive for two years should undergo up to three IVF cycles. This will be assessed on a case-by-case basis by medical professionals.

5. Does the Quality of the Treatment Impact Success?

Yes, the quality of the treatment and the skill level of the clinic and doctors can significantly impact IVF success rates. It is important to choose a clinic with state-of-the-art facilities and highly trained medical professionals.

6. When Should Couples Seek Medical Help for Fertility Issues?

Couples should seek medical help if they have been trying to conceive for a year without success. Early consultation with a fertility specialist can increase the chances of successful treatment.

7. How Many IVF Cycles Increase Chances of Success?

Undergoing three full IVF cycles significantly increases the chances of conceiving. For a healthy couple under 35, the cumulative success rate after three cycles is between 45-53%.

8. What Should You Avoid to Increase IVF Success?

Avoid alcohol, tobacco products, unnecessary drugs, and limit caffeine intake. Also, strive to keep stress levels low to improve IVF success chances.

9. How Does Age Affect IVF Success?

Younger women have higher IVF success rates as compared to older women. For women over 42, the success rates are very low, and IVF is generally not recommended due to ethical and financial considerations.

10. How Important is Emotional Support During IVF?

Emotional support is crucial during IVF treatment as it is a stressful process. Both partners should support each other and avoid blame to enhance the emotional well-being required for effective treatment.

  • Published on : Wednesday December 23, 2020
  • Last updated : Thursday July 4, 2024
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About the author

Michelle Tan is an IVF Consultant with 12 years of experience in fertility consulting. Having personally undergone IVF and surrogacy, she brings firsthand insight and empathy to her work. Based in Singapore, Michelle frequently travels to clinics in Bangkok, Phnom Penh, and Bishkek, sharing her expertise and supporting patients on their fertility journeys.