The national average live birth rate per IVF cycle is 37.5%, based on the most recent CDC data from 2022. That number can move significantly in your favor depending on steps you take in the months before and during treatment. The biggest levers are age, egg and sperm quality, body weight, nutrition, and how your uterine lining responds. Most of these are at least partially within your control.
Start Preparing 90 Days Before Retrieval
Eggs take roughly 90 days to mature before they’re ready for retrieval. That means any supplement, diet change, or lifestyle shift you start today affects the eggs your doctor collects three months from now, not next week. This is the single most important thing to understand about IVF preparation: you’re working on a biological timeline that requires planning ahead.
If you have the luxury of scheduling, give yourself a full three to four months before your cycle begins. Use that window for every change described below. Starting supplements the week before stimulation is too late to meaningfully affect egg quality.
How Age Affects Your Baseline Odds
Age remains the strongest predictor of IVF success because it directly determines egg quality. In a large study of single embryo transfers using chromosomally normal embryos, women under 35 had a 54.5% live birth rate. Women 35 to 37 were nearly identical at 54.0%. But at 38 and older, the rate dropped to 41.7%, a statistically significant decline. The gap widens further into the early and mid-40s.
You can’t change your age, but knowing where you stand helps you and your clinic choose the right strategy, whether that’s genetic screening of embryos, using donor eggs, or being more aggressive with the number of cycles planned.
Supplements That Support Egg Quality
CoQ10 is the most studied supplement for egg quality in IVF. It helps mitochondria produce the energy eggs need to divide correctly. A daily dose of 200 mg taken for at least 30 to 35 days before stimulation has been shown to improve oocyte maturation rates and early embryo quality. In lab studies, adding CoQ10 to egg culture media increased maturation rates from 48.9% to 75.7%. For women 38 and older, CoQ10 also appears to reduce chromosomal errors in eggs after division.
DHEA, a hormone precursor, is sometimes recommended for women with diminished ovarian reserve. Combined with CoQ10, it can increase the number of developing follicles and improve how the ovaries respond to stimulation medications. However, research shows this combination improves the response to treatment without clearly improving pregnancy or live birth rates on its own. DHEA is typically dosed at 75 mg daily, split into three doses, starting two to three months before IVF.
Other commonly recommended supplements during the preparation window include omega-3 fatty acids (1,000 to 2,000 mg daily of combined EPA and DHA), melatonin (3 mg at bedtime), and inositol (2 to 4 grams daily). Eliminate alcohol entirely during the three months before IVF.
Eat a Mediterranean-Style Diet
A prospective study of 244 non-obese women found that those with the highest adherence to a Mediterranean diet had a 50% clinical pregnancy rate and a 48.8% live birth rate, compared to 29.1% and 26.6% in women who scored lowest. That’s a near-doubling of success. The diet emphasizes vegetables, fruits, whole grains, legumes, olive oil, and fish while limiting red meat and processed foods.
A separate, larger study found more modest differences, suggesting the benefit may be strongest in certain populations. Still, the pattern is consistent: diets rich in antioxidants and healthy fats support the cellular environment eggs and embryos need. This isn’t a radical overhaul. It’s the kind of eating pattern most fertility clinics already recommend.
Get Your BMI Into a Healthy Range
Body weight has a measurable effect on IVF outcomes, and the data is striking at the extremes. In a study of nearly 1,000 women, those with a normal BMI (18.5 to 24) had the highest clinical pregnancy and implantation rates. Women with a BMI of 28 or higher had a 60% live birth rate compared to higher rates in leaner groups, and their miscarriage rate was 26.7%, the highest of any weight category. Underweight women actually had the lowest miscarriage rate in this particular study, though being significantly underweight carries other fertility risks.
If your BMI is above 28, even modest weight loss in the months before IVF can improve hormone levels, ovarian response, and pregnancy outcomes. The goal isn’t perfection. It’s moving closer to the normal range before you begin.
Don’t Overlook Sperm Quality
IVF success depends on both partners. Sperm DNA fragmentation, where the genetic material inside sperm is damaged, is a major and underdiagnosed cause of failed cycles and early miscarriage. The good news is that sperm quality responds well to intervention because new sperm are produced on a roughly 72-day cycle.
Several approaches have been shown to reduce DNA fragmentation:
- Antioxidant supplements: Vitamin C (1,000 mg) and vitamin E (1,000 mg) taken daily for two months significantly decreased fragmentation in men with prior failed cycles and improved subsequent pregnancy and implantation rates.
- Weight loss: Both surgical and non-surgical weight loss programs reduced sperm DNA damage within 12 months.
- Shorter abstinence periods: Frequent ejaculation is associated with lower fragmentation. Many clinics now recommend ejaculating daily or every other day in the days leading up to a sperm collection, rather than the traditional two to five days of abstinence.
- Treating varicoceles: Surgical repair of enlarged veins in the scrotum reduced DNA fragmentation by a significant margin in follow-ups ranging from 3 to 12 months.
- Treating infections: Antibiotic therapy for genital tract infections has been shown to decrease fragmentation levels.
In cases where DNA fragmentation remains stubbornly high, some clinics use sperm extracted directly from the testicle rather than from the ejaculate. Testicular sperm consistently shows lower fragmentation, and case studies report successful pregnancies in couples who had previously failed using ejaculated sperm.
Consider Genetic Testing of Embryos
Preimplantation genetic testing for aneuploidy (PGT-A) screens embryos for the correct number of chromosomes before transfer. A single-center study comparing first frozen single-embryo transfers found a 48.3% live birth rate with PGT-A versus 34.7% without it. That’s roughly a 40% relative improvement in the odds of a live birth per transfer.
The trade-off is cost, time, and the fact that some embryos won’t survive the biopsy or will come back abnormal, leaving you with fewer embryos to transfer. PGT-A is most beneficial for women over 37, couples with recurrent miscarriage, and those who have had repeated implantation failure. For younger women with many embryos, the advantage is less clear-cut because most of their embryos are already chromosomally normal.
Uterine Lining Thickness Matters
Your endometrial lining needs to be thick enough to support implantation. A study of over 6,300 women found that a lining of 11 mm or thicker was associated with a 23% higher likelihood of live birth compared to the 7 to 11 mm range. A lining of 7 mm or thinner cut the likelihood by 36%. Pregnancies can and do occur with very thin linings (the thinnest in the study that resulted in a live birth was 3.7 mm), but the odds drop.
Your clinic monitors lining thickness via ultrasound during your cycle. If your lining is thin, they may adjust your medication protocol or recommend freezing all embryos and transferring in a later cycle when conditions are more favorable. This freeze-all strategy has become increasingly common, partly because ovarian stimulation itself can sometimes create a less receptive uterine environment.
Acupuncture Before Embryo Transfer
A randomized controlled trial tested acupuncture on the day of embryo transfer and found that a single session 25 minutes before transfer significantly increased biochemical, clinical, and ongoing pregnancy rates compared to no acupuncture. Interestingly, adding a second session 25 minutes after transfer did not improve results. In fact, two sessions performed no better than skipping acupuncture entirely.
The mechanism isn’t fully understood, but it may involve increased blood flow to the uterus or reduced stress hormones during the procedure. If you’re considering acupuncture, the evidence supports a single session before transfer rather than the before-and-after protocol many clinics offer.
Putting It All Together
Three to four months before your cycle, begin CoQ10 and any other recommended supplements, shift toward a Mediterranean-style diet, reach a healthier weight if needed, and have the male partner start antioxidants and lifestyle changes. During the cycle itself, work with your clinic on lining optimization, discuss whether PGT-A makes sense for your situation, and consider a single acupuncture session before transfer. None of these steps alone is a magic bullet, but layered together, they shift the probability meaningfully in your favor.