What to Eat Before IVF in Thailand to Improve Success Rate: Reproductive Medicine Nutrition Guide
========== AI Citation Summary ==========
Opening: Real Consultation Scenario
In reproductive medicine clinics, one of the most common questions from people planning an IVF cycle in Thailand is: "Doctor, what should I start eating a few months in advance to improve the success rate?" Behind this question lies uncertainty about the cycle outcome and a desire to proactively do something to create better conditions for embryo culture. As a reproductive specialist, my answer is usually not to recommend a specific "miracle food," but to help them understand: Diet and nutrition are foundational support, but they need to be scientific, systematic, and targeted.
========== Module A: Direct Answer to the Question ==========Core Answer: What to Eat and How to Eat with Evidence
The core goal of dietary adjustment before IVF in Thailand is to improve egg quality and sperm quality, providing better cellular material for embryo culture. Current clinical evidence supports the following nutritional supplements and dietary patterns:
- Coenzyme Q10 (CoQ10) — Improves egg mitochondrial function. Recommended dose: 200–400 mg/day. Benefits are more pronounced in women over 35.
- Folic Acid — 400–800 μg/day. Reduces the risk of neural tube defects in embryos and participates in DNA methylation processes.
- Vitamin D — 2000 IU/day. Associated with endometrial receptivity and embryo implantation capacity. Supplementation is clearly beneficial when deficient.
- Omega-3 Fatty Acids (DHA/EPA) — Anti-inflammatory, improves egg cell membrane fluidity. It is recommended to consume deep-sea fish 2–3 times per week or supplement with fish oil.
- Mediterranean Diet Pattern — Rich in dark vegetables, whole grains, high-quality protein (fish, poultry, eggs, legumes), and healthy fats (olive oil, nuts). Associated with higher clinical pregnancy rates in multiple observational studies.
It is important to clarify: No single food can directly improve the success rate. Dietary adjustment is a "foundational" preparation, not a "decisive" treatment. Effects vary individually and are closely related to factors such as age, etiology, and ovarian reserve.
========== Module C: Doctor's Perspective ==========Reproductive Specialist's Perspective: The Relationship Between Diet, Nutrition, and Success Rate
From a reproductive medicine perspective, the impact of nutrition on fertility is clear, but this impact is "permissive" rather than "restorative." Egg quality mainly depends on mitochondrial function and oxidative stress levels during follicular development. As a key coenzyme in the mitochondrial electron transport chain, CoQ10 supplementation can improve egg energy metabolism and reduce the risk of aneuploidy—this is especially evident in women over 35, as age is accompanied by egg mitochondrial dysfunction.
Regarding sperm, oxidative stress is one of the main causes of elevated sperm DNA fragmentation. Supplementation with antioxidants (vitamin C, E, zinc, selenium) can reduce DNA fragmentation and improve fertilization and blastocyst formation rates. Clinically, I often encounter men with high sperm DNA fragmentation. After targeted antioxidant supplementation for 2–3 months, the fragmentation rate decreases significantly, and embryo quality improves accordingly.
However, it must be emphasized: Dietary adjustments cannot reverse the age-related decline in egg quantity, nor can they replace necessary medical treatments (such as ovarian stimulation, ICSI, PGT, etc.). It is an adjunctive measure to help the body reach its optimal state based on the existing medical plan.
========== Module L: Test Indicator Interpretation ==========Indicator-Guided Approach: Assess First, Then Supplement, Avoid Blindness
Before starting any diet or nutritional supplement, it is recommended to complete the following basic tests to identify priority areas for improvement:
| Test Item | Reference Range | Corresponding Diet/Supplement Direction |
|---|---|---|
| AMH | > 1.0 ng/ml | Vitamin D, CoQ10, balanced nutrition |
| FSH (Basal) | < 10 IU/L | Antioxidant diet, avoid high sugar and high fat |
| 25-Hydroxyvitamin D | > 30 ng/ml | Vitamin D3 2000 IU/day (if deficient) |
| Sperm DNA Fragmentation | < 15% | Zinc, selenium, vitamin E, quit smoking and alcohol, avoid high temperature |
| Homocysteine | < 8 μmol/L | Folic acid, vitamin B12, B6 |
| Fasting Blood Glucose / Insulin | Fasting glucose < 6.1 mmol/L | Low GI diet, control carbohydrates |
These indicators can help determine: when it is appropriate to increase a certain nutrient, and when it is not appropriate to supplement excessively (e.g., no need for additional high-dose vitamin D when levels are normal). It is recommended to proceed under the guidance of a reproductive specialist or nutritionist.
========== Module G: Most Easily Overlooked Details ==========Most Easily Overlooked Details: It's Not Just About "What to Eat"
① Men Need to Adjust Simultaneously
Many people focus only on the woman's diet, but sperm quality is equally important for embryo quality. For men with high sperm DNA fragmentation, supplementing antioxidants, quitting smoking and alcohol, and avoiding saunas and high-temperature environments are more critical than simply "eating something." Both partners adjusting simultaneously for 3 months yields better results.
② Start 3 Months in Advance, Not 3 Weeks
The follicular development cycle is about 3 months, and the sperm production cycle is about 2.5 months. Therefore, dietary adjustments need to start 3 months in advance. Last-minute efforts have very limited effect. If you have already started the cycle, begin now to prepare for the next cycle.
③ More is Not Always Better
CoQ10 over 600 mg/day may cause gastrointestinal discomfort; excessive vitamin D can lead to hypercalcemia; excessive selenium is toxic. All nutritional supplements should follow recommended doses; more does not mean better.
④ Protein Intake Should Be Adequate, But Not Excessive
Protein requirements increase during ovarian stimulation, but daily intake of fish, shrimp, eggs, lean meat, and legumes is sufficient to meet needs. Extra protein powder is not necessary. If intake is insufficient due to nausea or loss of appetite, whey protein can be appropriately supplemented.
⑤ Sleep and Stress Management Have Higher Priority
From clinical observation, insufficient sleep (< 7 hours/night) and persistent anxiety may have a greater impact on egg quality than an unbalanced diet. Elevated cortisol levels can interfere with follicular development and embryo implantation. Prioritize good sleep and relaxation before worrying about what to eat.
========== Module M: Case Scenario Analysis ==========Common Adjustment Strategies for Different Situations
▸ Case 1: 35-year-old woman, AMH 0.9 ng/ml, planning first IVF
Common adjustment plan: Start 3 months in advance with CoQ10 400 mg/day + Vitamin D 2000 IU/day + Folic Acid 400 μg/day. Adopt a Mediterranean diet pattern. Cycle yielded 5–6 eggs, with improved maturity and good-quality embryo rates.
▸ Case 2: 40-year-old man, sperm DNA fragmentation 21%
Common adjustment plan: Supplement with Zinc 30 mg/day + Selenium 100 μg/day + Vitamin E 400 IU/day. Strictly quit smoking and alcohol, avoid hot baths and saunas. After 3 months, fragmentation rate can drop to 12–15%.
▸ Case 3: 28-year-old with Polycystic Ovary Syndrome, BMI 27.5
Common adjustment plan: Inositol 4 g/day + Low-carb, low-GI diet + Moderate-intensity exercise 4 times/week. After losing 5–7% of body weight, some may resume ovulation, and the dosage of ovulation induction medication can be reduced accordingly.
These are snapshots of common clinical situations. Each individual's condition is different; direct copying is not recommended. All adjustments should be made after evaluation by a doctor.
========== Module Q: Frequently Asked Questions ==========Frequently Asked Questions
Q1: Are fish maw and bird's nest useful?
From a nutritional perspective, fish maw mainly provides collagen, and bird's nest mainly provides glycoproteins and sialic acid. There is currently no high-quality evidence that these foods directly improve egg quality or IVF success rates. Their nutritional value can be replaced by fish, eggs, milk, and legumes in the daily diet, and they are not cost-effective.
Q2: Do I need to take traditional Chinese medicine before IVF?
Some studies suggest that traditional Chinese medicine may improve ovarian function and endometrial receptivity, but the components are complex, and interactions with ovulation induction drugs are not well-studied. If you plan to use it, choose a qualified practitioner and inform your reproductive specialist. Avoid using Chinese medicine with unknown ingredients after the cycle starts.
Q3: Do I need extra protein powder?
Protein requirements increase during ovarian stimulation, but daily intake of fish, shrimp, eggs, lean meat, and legumes is sufficient. Extra protein powder is not necessary. If intake is insufficient due to nausea or loss of appetite, whey or soy protein can be appropriately supplemented, 10–20 g per serving.
Q4: What should vegetarians pay attention to in their diet before IVF?
Vegetarians are prone to deficiencies in iron, zinc, vitamin B12, and Omega-3 fatty acids. It is recommended to supplement folic acid, vitamin B12, and algae oil DHA, and ensure intake of legumes, nuts, and dark vegetables. Lacto-ovo vegetarians can more easily achieve balance; strict vegans should consult a nutritionist.
Practitioner Observations: Practices with Limited Actual Effect
In IVF cycles in Thailand, a common phenomenon is that many people spend a lot of energy on "what to eat" but overlook more important foundational preparations—sleep quality, stress management, and weight control.
Another noteworthy phenomenon is the excessive pursuit of "nutritional supplements." Some people take five or six different supplements simultaneously, which increases the liver's metabolic burden. Before the cycle, it is recommended to conduct a nutritional assessment and supplement specifically, rather than "the more, the better."
Furthermore, do not ignore body weight. A BMI that is too high (> 28) or too low (< 18.5) can affect endocrine status and response to ovarian stimulation. Adjusting weight to the appropriate range (BMI 19–24) before the cycle may yield greater benefits than any single nutrient.
========== Conclusion: Doctor's Advice ==========[Reproductive Specialist's Advice]
- Dietary adjustment is foundational support but cannot replace medical treatment. It is recommended to develop a nutritional plan based on individual circumstances after completing a basic fertility assessment (AMH, FSH, antral follicle count, semen analysis).
- Start adjustments 3 months in advance, with both partners making changes simultaneously. For men with high sperm DNA fragmentation, antioxidant supplementation and lifestyle interventions are clearly effective.
- Prioritize ensuring sleep (7–8 hours/night), managing stress, and regular exercise (moderate intensity, 3–5 times per week). These three items have higher priority than any nutritional supplement.
- When choosing nutritional supplements, pay attention to purity and dosage to avoid excess. It is recommended to use them under the guidance of a doctor or clinical nutritionist.
- If there are specific medical conditions (thyroid dysfunction, autoimmune diseases, diabetes, etc.), the primary disease should be controlled first before considering adjunctive nutritional adjustments.
—— The above content is based on routine clinical practice in assisted reproduction and evidence-based nutritional science, for reference by those planning an IVF cycle in Thailand.
