Foods to Eat and Avoid During IVF Treatment

Foods to Eat and Avoid During IVF Treatment

What you eat during IVF may not determine whether treatment succeeds or fails, but a growing body of evidence suggests that nutrition plays a meaningful supporting role in fertility outcomes. From egg quality and hormone balance to endometrial receptivity and embryo development, the nutrients you provide your body influence the biological processes that underpin reproduction.

This is not about perfection or following a rigid meal plan. It is about making informed choices that give your body the best possible nutritional foundation during a time when it matters most. Here is what the current research says about which foods to prioritize and which to limit during IVF treatment.

Foods to Eat During IVF

Colorful Fruits and Vegetables

Fruits and vegetables are packed with antioxidants, vitamins, and minerals that protect reproductive cells from oxidative damage. Oxidative stress can harm both egg and sperm quality, and a diet rich in diverse plant foods provides the broadest spectrum of protective compounds.

What to prioritize:

• Leafy greens (spinach, kale, Swiss chard) — rich in folate, iron, and vitamins A and K.
• Berries (blueberries, strawberries, raspberries) — among the highest antioxidant foods available.
• Tomatoes — excellent source of lycopene, an antioxidant linked to improved sperm quality.
• Avocados — provide healthy monounsaturated fats, folate, and potassium.
• Cruciferous vegetables (broccoli, cauliflower, Brussels sprouts) — contain compounds that support estrogen metabolism.
• Sweet potatoes — rich in beta-carotene, which the body converts to vitamin A, important for cell development.
• Bell peppers — one of the richest sources of vitamin C, supporting collagen formation and antioxidant protection.

Practical tip: Aim for at least five servings of fruits and vegetables daily, with as much color variety as possible. Different colors indicate different phytonutrients, so eating a rainbow ensures broad nutritional coverage.

Fatty Fish and Omega-3 Sources

Omega-3 fatty acids have powerful anti-inflammatory properties and play a role in hormone production, egg quality, and endometrial health. Research has linked higher omega-3 intake to improved IVF outcomes, including better embryo morphology and higher pregnancy rates.

Best choices:

• Salmon (wild-caught preferred) — high in omega-3s and relatively low in mercury.
• Sardines — excellent omega-3 source with very low mercury content.
• Mackerel (Atlantic) — rich in omega-3s. Avoid king mackerel, which is high in mercury.
• Trout — another low-mercury, high omega-3 option.
• Herring — small fish with a strong nutritional profile.

Aim for: Two to three servings of low-mercury fatty fish per week.

Whole Grains

Whole grains provide complex carbohydrates that are digested slowly, helping maintain stable blood sugar and insulin levels. Insulin resistance can interfere with ovulation and egg quality, making blood sugar management particularly important during fertility treatment.

Good options include:

• Quinoa (also a complete protein)
• Brown rice
• Oats (steel-cut or rolled)
• Whole-wheat bread and pasta
• Farro, barley, and bulgur

Why they matter: Refined grains (white bread, white rice, regular pasta) cause rapid blood sugar spikes that can contribute to insulin resistance. Swapping refined grains for whole grains is one of the simplest nutritional changes you can make.

Legumes

Beans, lentils, and chickpeas are fertility-friendly powerhouses. They provide plant-based protein, fiber, folate, and iron in a single food. The Nurses' Health Study, which followed thousands of women, found that replacing some animal protein with plant protein was associated with a lower risk of ovulatory infertility.

Easy ways to include legumes:

• Add chickpeas to salads and grain bowls.
• Make lentil soup or stew.
• Use black beans in tacos, burritos, or as a side dish.
• Enjoy hummus as a snack with vegetables.
• Blend white beans into pasta sauces for added creaminess and protein.

Nuts and Seeds

Nuts and seeds are concentrated sources of healthy fats, protein, vitamin E, selenium, and zinc, all nutrients that support reproductive health.

Highlighted picks:

• Walnuts — the highest omega-3 content among tree nuts. Studies have specifically linked walnut consumption to improved sperm quality.
• Brazil nuts — extraordinarily rich in selenium. Just two nuts per day provide the recommended daily intake.
• Pumpkin seeds — high in zinc, which is important for both egg and sperm development.
• Almonds — rich in vitamin E, a powerful antioxidant.
• Sunflower seeds — good source of folate and vitamin E.

Portion guidance: A small handful (about 30 grams or one ounce) daily provides significant nutritional benefit without excessive calories.

Extra-Virgin Olive Oil

The cornerstone of the Mediterranean diet, extra-virgin olive oil is rich in monounsaturated fatty acids and polyphenols with potent anti-inflammatory and antioxidant properties. Use it as your primary cooking oil and salad dressing base.

Eggs

Eggs are one of the most nutrient-dense foods available. They provide complete protein, choline (important for fetal brain development), vitamin D, B vitamins, and healthy fats. The yolk contains most of the nutrition, so eat whole eggs rather than just whites. Choose pasture-raised or omega-3 enriched eggs when possible for higher nutrient content.

Full-Fat Dairy (in Moderation)

Research from the Nurses' Health Study found that women who consumed one or more servings of full-fat dairy products per day had a 27% lower risk of anovulatory infertility compared to those who consumed mostly low-fat dairy. The mechanism is not fully understood, but it may relate to the hormones and fat-soluble vitamins naturally present in full-fat dairy.

Good choices: Greek yogurt, kefir, small amounts of quality cheese. Fermented dairy products like yogurt and kefir also provide beneficial probiotics.

Foods to Limit or Avoid During IVF

High-Mercury Fish

Mercury is a heavy metal that accumulates in larger, longer-lived fish. It can be toxic to reproductive cells and has been associated with poorer fertility outcomes. During IVF and pregnancy, mercury exposure should be minimized.

Fish to avoid entirely:

• Shark
• Swordfish
• King mackerel
• Tilefish
• Bigeye tuna

Fish to limit (no more than once per week):

• Albacore (white) tuna
• Yellowfin tuna
• Halibut
• Sea bass

Processed and Ultra-Processed Foods

Ultra-processed foods — packaged snacks, fast food, frozen meals, sugary cereals, and processed meats — are typically high in refined sugars, unhealthy fats, sodium, and artificial additives while being low in the nutrients that support fertility.

Research has consistently linked high consumption of processed foods with poorer fertility outcomes. These foods promote inflammation, disrupt blood sugar regulation, and may contain endocrine-disrupting chemicals from packaging materials.

Specific items to minimize:

• Packaged chips, cookies, and crackers
• Sugary drinks and sodas
• Processed deli meats and hot dogs
• Frozen convenience meals
• Fast food
• Margarine and shortening (sources of trans fats)

Refined Sugars and Carbohydrates

Excess sugar consumption drives inflammation and insulin resistance, both of which can negatively affect egg quality and ovarian function. During IVF, when hormone levels are already being carefully managed, additional blood sugar disruption is particularly undesirable.

Practical approach: You do not need to eliminate all sugar, but be mindful of hidden sources. Check labels on sauces, dressings, yogurts, and cereals, which often contain surprising amounts of added sugar. Satisfy sweet cravings with fruit, dark chocolate, or naturally sweetened alternatives.

Trans Fats

Trans fats are strongly associated with inflammation and insulin resistance, and research has linked them to decreased fertility. While many countries have restricted or banned artificial trans fats in food products, they can still be found in some baked goods, fried foods, and margarines.

How to avoid them: Read ingredient lists and avoid products containing "partially hydrogenated" oils. Even when a label says "0g trans fat," it may contain up to 0.5g per serving if partially hydrogenated oils are listed in the ingredients.

Raw and Undercooked Foods

Food safety becomes especially important during IVF and early pregnancy. Certain foods carry a risk of bacterial contamination that could harm a developing pregnancy:

• Raw or undercooked eggs — risk of Salmonella. This includes homemade mayonnaise, some salad dressings, raw cookie dough, and soft-scrambled eggs.
• Soft cheeses made from unpasteurized milk — risk of Listeria. Avoid brie, camembert, blue cheese, and queso fresco unless labeled as made with pasteurized milk.
• Raw or undercooked meat and fish — risk of Toxoplasma, Salmonella, and other pathogens. This includes sushi with raw fish, rare steak, and carpaccio.
• Raw sprouts — alfalfa, bean, and other sprouts can harbor bacteria in their growing conditions.

Soy in Excess

Soy contains phytoestrogens — plant compounds that can mimic estrogen in the body. While moderate soy consumption (a serving or two per day) is generally considered safe and may even be beneficial, very high intake during IVF is a topic of debate. Some fertility specialists recommend moderating soy intake during stimulation and the two-week wait, when precise hormonal balance is important.

Moderate amounts are fine: Tofu, edamame, or soy milk once a day is unlikely to cause issues. Avoid consuming large quantities of soy protein isolates or taking soy isoflavone supplements during your cycle.

Nutrition Across the IVF Timeline

Pre-Cycle (2-3 Months Before)

This is the time when dietary changes have the most impact on egg and sperm quality. Focus on:

• Establishing a Mediterranean-style eating pattern.
• Building up nutrient stores through whole foods and appropriate supplements.
• Reducing or eliminating processed foods, excess sugar, and alcohol.

During Stimulation

The stimulation phase is physically demanding. Your body needs adequate calories and nutrients to support the growth of multiple follicles. Focus on:

• Protein-rich foods to support follicle growth (aim for at least 60 grams of protein daily).
• Plenty of fluids to stay hydrated and reduce bloating.
• Easily digestible meals if you are experiencing nausea or bloating.
• Salty foods if advised by your clinic to help prevent ovarian hyperstimulation syndrome (OHSS).

After Egg Retrieval

Recovery from retrieval often involves bloating, cramping, and fatigue. Prioritize:

• Electrolyte-rich fluids (coconut water, broth).
• High-protein, easily digestible meals.
• Fiber-rich foods to prevent constipation, which is common after anesthesia.
• Avoid gas-producing foods if bloating is severe.

During the Two-Week Wait

After embryo transfer, continue the same healthy eating pattern without making dramatic changes. This is not the time for a dietary overhaul. Focus on:

• Consistent, balanced meals.
• Adequate protein and healthy fats.
• Foods you enjoy — reducing stress is also important during this period.
• Continued avoidance of raw or undercooked foods, as you should assume pregnancy is possible.

Putting It All Together

Eating well during IVF does not require cooking elaborate meals or following a restrictive diet. Here are some simple principles:

1. Build meals around vegetables. Make them the star, not the side dish.
2. Choose whole over processed. When in doubt, pick the food with fewer ingredients and less packaging.
3. Include protein at every meal. Mix plant and animal sources for variety.
4. Use olive oil generously. As your primary cooking and finishing fat.
5. Eat fish twice a week. Prioritize low-mercury, omega-3-rich varieties.
6. Snack on nuts and fruit. Instead of packaged snacks.
7. Stay hydrated. Water should be your primary beverage.
8. Do not stress about perfection. A generally healthy pattern matters far more than any individual meal.

A Note on Medical Guidance

This article is for informational purposes only and is not a substitute for professional medical advice. The authors of this blog are not doctors or medical professionals. Always consult with your fertility specialist or healthcare provider before making any decisions about your treatment. Every person's fertility journey is unique, and your doctor can provide guidance tailored to your specific situation.

Conclusion

Nutrition during IVF is not about finding a single miracle food or following a perfect diet. It is about consistently providing your body with the nutrients it needs to support the complex biological processes of reproduction. By prioritizing whole, nutrient-dense foods and minimizing processed, inflammatory, and potentially harmful ones, you create the best possible nutritional environment for your treatment.

These dietary changes are within your control at a time when so much feels out of your hands, and that sense of agency can be valuable in itself. Feed your body well, be kind to yourself when you reach for something less than ideal, and trust that the overall pattern of your eating matters far more than any single choice.