Fertility Tips: What Actually Works
Beyond timing intercourse correctly, your daily habits have a measurable impact on fertility. Here is what the evidence says - and what you can start doing today.
The Biggest Levers You Can Pull
Fertility optimisation is not about any single hack. It is the compounding effect of multiple consistent habits. The good news: most changes take effect within one to three months. Start the changes described on this page ideally 3-6 months before you want to conceive, track your ovulation throughout, and confirm you are in range for a positive pregnancy test with the timing guide.
Diet for Fertility
The "fertility diet" pattern that has the strongest research backing is a Mediterranean-style diet: rich in vegetables, legumes, whole grains, healthy fats, and lean protein. Ultra-processed food, trans fats, and excess sugar work against fertility by driving inflammation, disrupting insulin sensitivity, and interfering with ovulation regularity.
| Food Group | Best Choices | Why It Helps |
|---|---|---|
| Leafy greens | Spinach, kai lan, broccoli, chye sim | Folate, iron, antioxidants |
| Whole grains | Brown rice, oats, quinoa, wholemeal bread | Stabilises blood sugar, supports progesterone |
| Healthy fats | Avocado, walnuts, olive oil, fatty fish | Omega-3 reduces inflammation, supports oestrogen |
| Lean protein | Chicken, tofu, eggs, legumes, fish | Essential amino acids for hormone production |
| Full-fat dairy | Full-fat yoghurt, cheese, whole milk | Harvard Nurses Study linked to better ovulation vs low-fat |
| Antioxidant foods | Berries, tomatoes, nuts, seeds | Protect eggs and sperm from oxidative damage |
Foods to Limit
Supplements Worth Taking
A good prenatal vitamin covers most bases. Below are the supplements with the strongest evidence for female fertility - and a few for men. Always discuss with your doctor or pharmacist before adding new supplements, especially if you are on medication.
Reduces neural tube defect risk by up to 70%. Start at least one month before trying, ideally 3 months before - the goal is to be covered from the moment of conception, before you even get a positive pregnancy test. Available at Guardian, Watsons, and polyclinic pharmacies. Those with MTHFR gene variants may need methylfolate instead - ask your GP.
Vitamin D deficiency is common in Singapore despite sun exposure (due to indoor lifestyles and SPF use). Low vitamin D is linked to poor egg quality, PCOS and irregular cycles, and endometriosis. A blood test at your GP or polyclinic can confirm your level.
Supports egg quality, reduces inflammation, and is critical for foetal brain development in early pregnancy. Choose a certified low-mercury fish oil or algae-based omega-3 (if vegetarian).
An antioxidant that supports mitochondrial function in eggs. Studies show it can improve egg quality in women over 35. Takes 3 months to build up - start early. Also improves sperm motility in men - especially relevant if you are considering IVF or ICSI, where egg and sperm quality directly affect embryo development.
Iron deficiency anaemia can suppress ovulation. Eat iron-rich foods (spinach, tofu, meat, lentils) with vitamin C to boost absorption. Get blood iron levels checked before supplementing - excess iron is harmful.
Myo-inositol (especially in a 40:1 ratio with D-chiro-inositol) is the best-studied natural supplement for PCOS. Multiple randomised trials show improvements in ovulation regularity, egg quality, and insulin sensitivity. Often prescribed by KKH and NUH fertility specialists - the same centres covered in the IVF guide.
Lifestyle Changes That Move the Needle
Your reproductive hormones are sensitive to systemic inflammation, stress, and metabolic health. The lifestyle factors below have direct, measurable effects on cycle regularity, egg quality, and sperm parameters.
Reach a Healthy BMI
Both underweight (BMI under 18.5) and overweight (BMI over 25 for Asians) disrupt ovulation. Fat tissue produces oestrogen - too much or too little throws off the hormonal balance. A 5-10% weight change can restore normal ovulation cycles. Once cycles regularise, track your fertile window with the Ovulation Calculator. Use HPB's BMI calculator for Singapore-specific thresholds.
Exercise - But Not Too Much
Moderate exercise (150 min/week of brisk walking, swimming, or yoga) improves insulin sensitivity and reduces stress. Intense training (over 10 hours/week or marathon-level) can suppress ovulation. If you are an athlete, discuss with a sports medicine doctor and your OB-GYN.
Prioritise Sleep
Melatonin and reproductive hormones are closely linked. Poor sleep (under 7 hours per night) reduces LH and FSH secretion, disrupts the cycle, and lowers sperm count in men. Aim for 7-9 hours. Avoid screens an hour before bed and keep the room cool - Singapore heat disrupts sleep quality.
Manage Stress
Chronic stress elevates cortisol, which competes with progesterone production and can delay or suppress ovulation. Evidence supports mindfulness, yoga, and acupuncture as effective stress reducers during TTC. Therapy or counselling can help if TTC anxiety is significant - this is especially important during the waiting period before or between IVF cycles.
Stop Smoking Completely
Smoking accelerates ovarian ageing - smokers reach menopause on average 2 years earlier than non-smokers. It reduces sperm count, motility, and morphology. There is no safe amount. Even vaping and passive smoke exposure are harmful. Singapore has many free cessation programmes - ask your polyclinic. If you are concerned about how smoking has affected your fertility timeline, the IVF guide covers when to seek specialist help.
Zero Alcohol While Trying
No alcohol level is established as safe in early pregnancy, and the first weeks are often before you know you are pregnant. Alcohol also reduces sperm quality and disrupts hormonal signals. If stopping entirely feels difficult, speak with a doctor - this can be a sign of dependence that has its own treatment path.
Male Fertility Tips
Male factor contributes to infertility in roughly 40-50% of couples. Sperm take 72-90 days (about 3 months) to mature - so changes you make today affect the sperm that will be used in 3 months. If a semen analysis reveals severe male factor infertility, ICSI alongside IVF may be recommended by your specialist. Both partners should work on this together.
| Factor | Impact on Sperm | What to Do |
|---|---|---|
| Heat exposure | Reduces sperm count and motility | Avoid hot baths, saunas, laptops on lap; loose-fitting underwear |
| Smoking | Damages DNA, reduces count and motility by up to 22% | Stop completely - see polyclinic for cessation support |
| Alcohol | Reduces testosterone, disrupts sperm formation | Keep to under 3 units/week or ideally zero |
| Anabolic steroids | Severely suppresses sperm production (can cause azoospermia) | Stop immediately; recovery can take 12-24 months |
| Obesity | Increases scrotal temperature, converts testosterone to oestrogen | Weight loss of 5-10% can significantly improve parameters |
| CoQ10 + Zinc + Vitamin E | Antioxidants protect sperm DNA integrity | Male fertility supplements (e.g. Proceive Men, Wellman Conception) |
| Frequency of ejaculation | Abstinence over 5 days reduces motility despite higher count | Every 2-3 days during fertile window is optimal |
What to Avoid When TTC
Some common substances and exposures have a documented negative effect on fertility and early pregnancy. Many of these are everyday items in Singapore households.
BPA and Plastics
Bisphenol-A (BPA) is an endocrine disruptor found in some plastics and food can linings. It mimics oestrogen and can interfere with ovulation and sperm production. Avoid heating food in plastic containers, switch to glass or stainless steel drink bottles, and choose BPA-free options where possible.
Lubricants
Most commercial lubricants (including KY Jelly and Astroglide) are toxic to sperm - even small amounts significantly reduce sperm motility. Use fertility-safe lubricants (PreSeed or Conceive Plus) or none at all during your fertile window. Use the Fertility Window Estimator to know exactly when that window is.
Certain Medications
NSAIDs (ibuprofen, naproxen) taken around ovulation may impair follicle rupture. Long-term use of antidepressants, antipsychotics, and some blood pressure medications can affect hormones. Do not stop prescribed medications without discussing with your doctor - but let them know you are trying to conceive. It is especially important to flag this during your ovulation tracking phase, as some medications affect LH detection and cycle timing.
High Caffeine Intake
Research links very high caffeine intake (over 400 mg/day, roughly 4 coffees) to reduced fertility and increased miscarriage risk in early pregnancy. Keep to under 200 mg/day (roughly 1-2 cups of coffee or equivalent). Kopi from your hawker centre contains roughly 100-150 mg per cup.
Occupational Exposures
Pesticides, heavy metals (lead, mercury, cadmium), solvents, and radiation exposure can all affect reproductive health. If you work in construction, manufacturing, a nail salon, or with chemicals, discuss protective measures with your employer and occupational health doctor.
Timing Intercourse for Maximum Odds
Getting the timing right is one of the highest-impact things you can do. Many couples unknowingly time intercourse incorrectly - either too late (after ovulation, when the egg is no longer viable) or not frequently enough during the fertile window. Use the Ovulation Calculator to find your window and the ovulation guide to understand tracking methods.
Singapore Fertility Resources
Singapore has excellent fertility care infrastructure, especially at the public hospitals. The IVF and ART guide covers the full treatment pathway. Here is a quick reference for local resources and the first steps to take.
First Steps in Singapore
- Visit your polyclinic GP for preconception bloodwork and referral
- Start folic acid today (available at all Guardian/Watsons/NTUC pharmacies, ~$10-20/month)
- Ask your GP about subsidy-eligible fertility investigations (blood tests, semen analysis, ultrasound)
- If referred, public hospital waiting time is typically 4-8 weeks for a specialist
- Check your Medisave balance - certain procedures are Medisave-claimable