IVF Success Rate: What Factors Influence The Chances Of Success In IVF Therapy?

IVF or in vitro fertilization was very rare just 20 years ago, but it is now one of the most commonly recommended approaches to infertility. Fertility experts say that this is because India has seen a 20-30 per cent rise in infertility rates in the last 5 years alone. Research suggests that up to 45% of Indian couples face infertility problems and working women in urban areas are at the highest risk for infertility problems.

The reason that IVF has become so popular is because it can drastically increase a couple’s chances of conceiving. The cost of IVF is pretty high and generally runs into lakhs, so couples would naturally want to know what the exact success rate of IVF is before they invest a large portion of their savings into IVF procedures.

Although fertility experts cannot give you exact figures regarding your chances of conceiving, they can give you approximate success rate of IVF which will give you a better understanding of your chances.

What Is The Success Rate Of IVF Depending On Women’s Age

A woman’s age is the most important factor that influences the success rate of IVF procedures. The IVF success rate is highest for women between 24 and 34 as this is the period when they are at their peak fertility levels. Let’s take a look at the IVF success rates according to age.

Age Group IVF Success Rate
24 – 34 32.2%
35 – 37 27.7%
38 -39 20.8%
40 – 42 13.6%
43 – 44 5.0%
45+ 1.9%

The IVF success rate starts to dip slightly from 28 to 31 years, dropping sharply after the age of 34 and continuing to decrease rapidly until the age of 45, which is when it hits its lowest point. A woman’s age doesn’t just affect her IVF pregnancy rate, it also affects the rate of miscarriage and the probability of a live birth — the higher her age, the higher the risk of complications, which lowers the chance of a live birth.

The drop in fertility levels with age is due to a corresponding drop in the quantity and/or quality of eggs. There are egg quantity tests to ensure that a woman is producing an adequate number of eggs, but there are no tests for egg quality — as of now, age is the only factor used to determine egg quality.

IVF Success Rates: What Are The Other Influencing Factors?

Although a woman’s age is the most important factor in determining the IVF success rates, there are other contributing factors. You can even make changes to your lifestyle in order to increase your chances of conceiving.

Type Of Fertility Problems

“The type of fertility problem and the available treatments are also factors in determining success rates”

In most cases, only one spouse has a fertility problem, but in some cases, both spouses have fertility issues and this can drastically reduce the IVF success rate. The type of fertility problem and the available treatments are also factors in determining success rates.

For instance 45% of women with fertility problems suffer from endometriosis, but with surgery, 81 -84% are able to conceive. Similarly, 30% of men with fertility problems suffer from male tube blockages, but with surgery, up to 40% are able to impregnate within 18 months of surgery.

Previous Pregnancy

“A history of previous successful pregnancies using IVF treatments increases a couple’s IVF success rate”

Women who have managed to get pregnant using IVF treatments have a higher probability of IVF success with their second pregnancy. Conversely, if they have a history of recurrent miscarriages, it will reduce their chances of IVF success.

Lifestyle Habits

“Females who smoke have lower implantation rates as compared to non-smokers and that they require almost twice as may IVF attempts in order to conceive”

Stop smoking — this is one of the simplest tips to increase IVF success rates! Smoking does have an impact on a man’s fertility levels, but the effect is much greater on a woman. Studies show that females who smoke have lower implantation rates as compared to non-smokers and that they require almost twice as may IVF attempts in order to conceive. Most clinics strongly urge women to quit smoking for a minimum of 3 months before their IVF fertility treatments in order to increase their chances of conceiving.

Weight also plays an important role in IVF success rates as overweight women have less IVF success with their fertility treatments as compared to women within their healthy weight range.

Use Of Donor Eggs

“Using donor eggs from a younger woman in her peak fertility window will provide a 55% live birth success rate through egg/embryo transfer”

The use of donor eggs increases the IVF success rate significantly, especially if the woman is over 40. If you decide to use donor eggs, the age of the donor is very important as this would affect the quality of the eggs and therefore affect your chances of conceiving. Studies show that using donor eggs from a younger woman in her peak fertility window will provide a 55% live birth success rate through egg/embryo transfer.

Choice Of Fertility Clinic

“Well renowned fertility clinics will have more up-to-date equipment along with the latest IVF treatment methods which will have a positive impact on IVF success rates”

The cost of IVF treatments vary greatly from one city to the next and even in different clinics within the same city. Couples are tempted to choose the cheapest option available in order to keep their IVF costs down. However, your choice of fertility clinic will affect IVF success rates as the bigger fertility clinics will have more up-to-date equipment along with the latest IVF treatment methods. Find out the IVF success rates of various clinics before you make your choice.

IVF Success Rate: Myths And Facts

Myth: An IVF success rate below 50% is poor.

Fact: An IVF success rate of 20 — 35% is normal while a success rate of 40% is considered to be high. It is important to know IVF success rates so that you have a clear view of what to expect and so that you understand that you may not get pregnant on your first try and might need a couple of treatment cycles.

Myth: A young fertile couple has an 80% chance of conceiving naturally during any given month

Fact: A young couple with no fertility issues has approximately a 15-20% chance of getting pregnant in any given month. This is why couples generally take a minimum of 6 months to conceive naturally. It is also why doctors ask couples to try for a minimum of 1 year before they approach a fertility expert.

Myth: Less than 10% of IVF cycle treatments result in pregnancy.

Fact: Approximately 36% of IVF cycles result in pregnancy and almost 30% of the cycles result in a live birth. This is pretty high when you consider than fertile couples only have a 15-20% chance of conceiving naturally in a month.

Our Advice

Finding out that you have a fertility problem can be very stressful in itself and the IVF treatments after that can just add to your anxiety and put a great deal of stress on your relationship. If you are in your 40s, you might worry that your window of opportunity has closed as the IVF success rates over 40 are on the lower side — but it’s never too late, this Indian woman used IVF treatments to get pregnant at 70! So don’t give up hope and find out from your doctor how to increase IVF success rates… we’ll be hoping that all your troubles are little ones!

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Recommended Reads:

What Is The Cost Of IVF In India: Is It Really Affordable?

The Not-So-Common Reasons Why You’re Not Getting Pregnant, Despite Trying So Much!

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