How to Improve Egg Quality for Egg Freezing: The Complete 90-Day Guide (Supplements, Diet & Lifestyle)
September 5, 2025
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If you’re preparing for IUI, or you’ve had a cycle that didn’t work and you’re wondering what you could do differently next time, this is for you.
Intrauterine insemination (IUI) is often the first fertility treatment women try. It’s less invasive and less expensive than IVF, and for the right situation, it works. But here’s what most clinics won’t spend much time on: what you do with your body in the weeks before an IUI cycle can meaningfully affect whether it succeeds.
Your egg quality, your hormone balance, your uterine lining, your cervical mucus, your stress levels, your nutrient status — all of these influence IUI outcomes, and all of them are at least partly within your control.
Let’s cover what IUI actually is and when it’s used, and then I’ll walk you through exactly how to prepare your body to give each cycle its best possible chance.
Read next: How to Prepare Your Body for IFV
Intrauterine insemination (IUI) is a fertility treatment that involves placing sperm inside a woman’s uterus to facilitate fertilization. Essentially, sperm that have been washed and concentrated are placed directly in your uterus around the time your ovary releases one or more eggs to be fertilized.
The goal of IUI is to increase the number of sperm that reach the fallopian tubes and subsequently increase the chance of fertilization. While IUI does provide the sperm an advantage by giving it a head start, the sperm is on its own to actually reach and fertilize the egg. It is a less invasive and less expensive option compared to In Vitro Fertilization (IVF).
IUI is commonly used for unexplained infertility. IUI is often performed as a first treatment for unexplained infertility along with ovulation-inducing medications.
It it also commonly used in the following cases:
Donor sperm. For women who need to use donor sperm to get pregnant, IUI is most commonly used to achieve pregnancy. Frozen donor sperm specimens are obtained from certified labs and thawed before the IUI procedure.
Endometriosis-related infertility. For infertility related to endometriosis, using medications to obtain a good quality egg along with performing IUI is often the first treatment approach.
Mild male factor infertility. Your partner’s semen analysis, one of the first steps in the medical assessment of infertility, may show below-average sperm concentration, weak movement (motility) of sperm, or abnormalities in sperm size and shape (morphology). IUI can overcome some of these problems because preparing sperm for the procedure helps separate highly motile, normal sperm from those of lower quality. For more information on what factors affect male fertility, please see this blog post.
Cervical factor infertility. Your cervix, at the lower end of the uterus, provides the opening between your vagina and uterus. Mucus produced by the cervix around the time of ovulation provides an ideal environment for sperm to travel from your vagina to the fallopian tubes. But, if your cervical mucus is too thick, or too scanty, it may impede the sperm’s journey. IUI bypasses the cervix, depositing sperm directly into your uterus and increasing the number of sperm available to meet the awaiting egg.
Semen allergy. Rarely, a woman may have an allergy to proteins in her partner’s semen. Ejaculation into the vagina causes redness, burning and swelling where the semen contacts the skin. A condom can protect you from the symptoms, but it also prevents pregnancy. If your sensitivity is severe, IUI can be an effective option since many of the semen proteins are removed before the sperm is inserted.
Fortunately, it’s relatively quick and easy. It’s generally performed in the doctor’s office, without any anesthesia or discomfort. It’s not that dissimilar from going for your regular Pap smear …
Before intrauterine insemination, ovulation stimulating medications may be used, in which case careful monitoring will be necessary to determine when the eggs are mature. The IUI procedure will then be performed around the time of ovulation, typically about 24-36 hours after the surge in LH hormone that indicates ovulation will occur soon.
Once you get to the doctor’s office, you’ll put your legs into stirrups and a speculum will be inserted into your vagina. During the procedure, the doctor or nurse attaches a vial containing a sample of healthy sperm to the end of a long, thin, flexible tube (called a catheter). The catheter is inserted into your vagina through your cervical opening and into your uterus. They push the (washed) semen sample in through the tube, and then remove the tube, catheter, and speculum. It’s as easy as that! You may be asked to lay down for a few moments after the procedure, but then you are encouraged to go on about your day!
The next step? Watch for signs and symptoms of pregnancy ;).
Success rates are largely dependent on why you’ve been recommended IUI as an option, and what medications you are taking in conjunction with IUI. As with most fertility procedures, IUI success is higher for younger women (under 35 years old). The chances of pregnancy based on age, after one IUI cycle, are as follows:
Under 35: 10 – 20% chance of pregnancy
Between 35-40: 10% chance of pregnancy
Over 40: 2-5% chance of pregnancy
Your chances of conceiving with IUI can definitely be increased by looking closely at your diet, lifestyle, environment, stress levels, nutrients, etc. That’s where I come in! You’re inherently designed to conceive the baby you’ve always dreamed of but you need a plan of action that WORKS. There may be things in your diet and lifestyle that are blocking your natural fertility, inhibiting your hormonal function, and preventing you from getting pregnant, even with the use of Assisted Reproductive Technology. Read more about how I help clients prepare for an IUI, or schedule an Initial Fertility Assessment to work with me directly.
IUI gives sperm a head start. But it can’t fix egg quality, hormone imbalances, or a uterine lining that isn’t ready. That’s the part you can work on before your cycle, and it’s exactly what I focus on with my clients.
Egg maturation takes about 90 days. What you do nutritionally in that window directly affects the quality of the egg released during your IUI cycle.
IUI success depends on implantation, and implantation depends on progesterone and a receptive uterine lining. This is one of the most overlooked pieces.
Even though IUI bypasses the cervix, healthy estrogen and cervical mucus reflect the hormone balance that supports the whole cycle.
Chronic inflammation and endocrine-disrupting toxins affect egg quality and hormone function.
Both directly affect the hormones involved in ovulation and implantation.
Most women go into IUI without a full picture of their hormones. Testing the right markers at the right time reveals whether something correctable — like low progesterone or a thyroid issue — is quietly lowering your odds.
If you’ve had an IUI cycle fail and been told everything looks normal, that’s worth a second look. It’s rarely unexplained. It’s uninvestigated.
If you’re trying to get pregnant and looking for a solution-based, comprehensive approach, read my complete guide: What’s Actually Preventing Pregnancy — and How to Fix It.
If you’ve been told everything looks normal but you’re still not pregnant — or you have a diagnosis like PCOS, endometriosis, or poor egg quality and nothing is working — there’s almost always something deeper that hasn’t been found yet.
Standard fertility testing rarely evaluates the factors that actually determine whether pregnancy happens: egg quality, ovulation quality, metabolic health, inflammation, nutrient status, and how your body responds to stress.
After nearly 20 years and hundreds of clients, I’ve found that most fertility struggles come down to a small number of hidden biological drivers. When those drivers are identified and addressed in the right order, the body responds.
That’s exactly what we uncover inside The Fertility Code — my 12-week, high-touch fertility program for women who are done guessing. We find what’s been missed and build a clear, personalized strategy around your body, your labs, and your history.
With 1:1 coaching, direct access between calls, lab reviews, evidence-based content, and structured accountability, you get expert eyes on your case so you can stop second-guessing and start moving forward with clarity.
Over 90% of the women I work with go on to conceive.
If you’re ready to finally understand what your body needs for a successful pregnancy — and fix what’s been missed — you can explore the program here → The Fertility Code.
Or schedule a free Fertility Strategy Call to see if the program is right for you.
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