The most effective ways to increase female fertility involve a combination of dietary changes, body weight management, cycle timing, and reducing exposure to harmful chemicals. None of these factors work in isolation, but together they can meaningfully shift your chances of conceiving. Here’s what the evidence supports.
Eat a Mediterranean-Style Diet
A diet rich in vegetables, fruits, whole grains, fish, olive oil, and legumes is consistently linked to better fertility outcomes. Women with high adherence to a Mediterranean-style eating pattern are roughly 40% more likely to become pregnant compared to those with low adherence. In one large study, women in the top three-quarters of diet adherence had a 44% live birth rate, compared to 31% for women in the lowest quarter.
The pattern also appears to protect ovarian function. Women who followed this diet more closely had significantly lower risk of poor ovarian response during treatment cycles. The key isn’t any single food but the overall pattern: plenty of plant foods, healthy fats from olive oil and fish, moderate dairy (especially yogurt and cheese), and limited red and processed meat. You don’t need to overhaul your diet overnight. Start by swapping in more of these foods and reducing processed options.
Get to a Healthy Weight
Body weight has a direct effect on ovulation. The optimal BMI range for conception is 18.5 to 24.9. Being significantly above or below this range disrupts the hormonal signals that trigger egg release each month. Women who are underweight may stop ovulating altogether, while excess body fat increases estrogen levels in ways that interfere with regular cycles.
If your BMI falls outside this range, even a modest shift can help. Losing 5 to 10% of body weight in women with overweight has been shown to restore regular ovulation in many cases. The goal isn’t a specific number on the scale but getting your body into a hormonal range where cycles become predictable.
Time Intercourse to Your Fertile Window
Your fertile window spans about seven days each cycle: the five days before ovulation, the day of ovulation itself, and the day after. You ovulate roughly 12 to 14 days before the start of your next period, not 14 days after the start of your last one (an important distinction for women with irregular cycles).
For the best chances, aim for sex every day or every other day during this window. Tracking your cycle with ovulation predictor kits, basal body temperature, or cervical mucus changes can help you pinpoint the right days. Sperm survive in the reproductive tract for up to five days, so having sex in the days leading up to ovulation is just as valuable as the day itself.
Start Folic Acid Before Conception
Every woman capable of becoming pregnant should take 400 micrograms of folic acid daily, starting at least one month before conception. Folic acid is essential for preventing neural tube defects in the earliest weeks of pregnancy, often before you even know you’re pregnant. If you’ve had a previous pregnancy affected by a neural tube defect, the recommended dose jumps to 4,000 micrograms daily, so talk to your provider about the right amount.
Most prenatal vitamins contain the standard 400 mcg dose. Starting early matters because the neural tube forms within the first 28 days after conception.
Consider CoQ10 and Inositol Supplements
Coenzyme Q10 (CoQ10) supports the energy-producing structures inside your eggs. A meta-analysis found that CoQ10 supplementation improved pregnancy rates, with the strongest benefit seen in women under 35 who had diminished ovarian reserve. The optimal regimen identified in the research was a relatively low dose of 30 mg per day, started three months before attempting conception to give eggs time to benefit during their maturation window.
For women with polycystic ovary syndrome (PCOS), a combination of myo-inositol and D-chiro-inositol in a 40:1 ratio has been shown to restore ovulation. The typical dose used in clinical studies is 550 mg of myo-inositol plus 13.8 mg of D-chiro-inositol, taken twice daily for several months. This ratio mirrors the body’s natural balance of these compounds and helps improve insulin sensitivity, which is a core driver of PCOS-related ovulation problems.
Prioritize Sleep
Sleep duration directly affects the hormones that drive your cycle. Women who sleep eight or more hours per night have FSH levels about 20% higher than women who sleep less than eight hours. FSH (follicle-stimulating hormone) is the signal that tells your ovaries to develop eggs each cycle. Chronically short sleep can dampen this signal.
This doesn’t mean you need to sleep exactly eight hours every night, but consistently cutting sleep short to six hours or less may be quietly undermining your fertility. If you’re struggling with sleep quality, addressing that is a legitimate fertility strategy, not just a general wellness suggestion.
Reduce Exposure to Endocrine Disruptors
Certain everyday chemicals mimic or block your reproductive hormones, interfering with ovulation, implantation, and cycle regularity. The most well-studied offenders include BPA (found in plastics, food can linings, and thermal receipts), phthalates (used to soften plastics and found in many fragranced products), and flame retardants in electronics and furniture.
BPA exposure during reproductive years has been shown to compromise embryo implantation and is associated with ovarian cysts. Phthalates disrupt hormonal signaling by either blocking hormone receptors or mimicking hormones the body doesn’t need. Even low-level lead exposure can alter reproductive hormones in premenopausal women and may shorten reproductive lifespan. These chemicals have also been linked to endometriosis and fibroids.
Practical steps to reduce exposure: switch to glass or stainless steel food containers, avoid microwaving plastic, choose fragrance-free personal care products, and wash hands frequently (since many of these chemicals transfer through touch). You can’t eliminate exposure entirely, but reducing your daily load makes a difference over time.
Rethink Alcohol, but Don’t Worry About Coffee
Women who drink more than seven alcoholic drinks per week are about 7% less likely to conceive compared to non-drinkers. That’s a modest but real effect, and it becomes more significant when combined with other factors working against you. Cutting back to a few drinks per week, or eliminating alcohol entirely while trying to conceive, removes one variable from the equation.
Caffeine, on the other hand, doesn’t appear to affect pregnancy odds or live birth rates. If your morning coffee is a non-negotiable, the current evidence suggests it’s not hurting your chances.
Understand Your Age-Related Baseline
Egg quantity declines with age in a predictable pattern. Anti-Müllerian hormone (AMH) is the best available marker for ovarian reserve, and typical levels drop steadily: around 3.0 ng/mL at age 25, 2.5 at 30, 1.5 at 35, 1.0 at 40, and 0.5 at 45. These are lower-end estimates, so your individual number may be higher, but the trajectory is consistent.
Knowing your AMH level helps you understand how much time flexibility you have. A 34-year-old with an AMH of 0.8 is in a very different situation than one with an AMH of 3.0, even though they’re the same age. If you’re over 30 and planning to conceive in the next few years, asking for an AMH test gives you information you can actually act on, whether that means trying sooner, freezing eggs, or simply feeling reassured that your reserve is healthy.