The most effective natural strategies for increasing fertility center on body weight, diet, sleep, physical activity, and reducing exposure to hormone-disrupting chemicals. Many of these changes take two to three months to show their full effect, since eggs mature over about 90 days and a fresh cycle of sperm takes roughly 10 to 12 weeks to develop. Starting early gives your body time to respond.
Reach a Fertility-Friendly Weight
Body weight is one of the strongest predictors of how easily you’ll conceive. A BMI between 19 and 24 is considered the normal range for fertility. Below 19, the body may not produce enough of the hormones that trigger ovulation each month. Above 25, excess body fat can shift hormone levels in the opposite direction, also disrupting ovulation and reducing sperm quality in men.
You don’t need to hit a perfect number. Even modest changes, losing or gaining 5 to 10 percent of your body weight, can restore regular ovulation for many people. If your periods are irregular or absent, that’s often a sign that weight is affecting your cycle. The goal is steady, sustainable change rather than crash dieting, which can stress the body and further suppress reproductive hormones.
Eat a Mediterranean-Style Diet
A diet built around vegetables, fruits, whole grains, legumes, fish, and olive oil has some of the strongest evidence behind it. In a study published in Human Reproduction, non-obese women who closely followed a Mediterranean diet had a clinical pregnancy rate of 50 percent compared to 29 percent among women with the lowest adherence. Live birth rates followed the same pattern: 49 percent versus 27 percent. Among women under 35, every 5-point improvement on a Mediterranean diet score was associated with roughly 2.7 times higher odds of pregnancy and live birth.
The pattern matters more than any single food. This style of eating is rich in antioxidants, healthy fats, and micronutrients that support egg and sperm quality. It also tends to keep blood sugar stable, which helps regulate the hormones involved in ovulation. On the flip side, diets high in processed foods, refined carbohydrates, and trans fats have been linked to longer time-to-pregnancy in multiple studies.
Folic Acid
The CDC recommends that all women who could become pregnant get 400 micrograms of folic acid daily. This is primarily to prevent neural tube defects in early pregnancy, which form before most people even know they’re pregnant. A standard prenatal vitamin covers this, or you can get it through fortified cereals and leafy greens. If you’ve had a previous pregnancy affected by a neural tube defect, the recommendation jumps to 4,000 micrograms daily, starting at least one month before conception.
Limit Caffeine and Alcohol
Women who drink large amounts of caffeine may take longer to conceive and face a slightly higher risk of miscarriage. The recommended limit for anyone pregnant or trying to conceive is 200 milligrams per day, which works out to roughly two standard cups of coffee. Tea, energy drinks, and chocolate also contribute to your daily total, so it’s worth doing a rough count.
Alcohol affects fertility on both sides. In women, even moderate drinking has been associated with reduced conception rates. In men, heavy drinking lowers testosterone and impairs sperm production. Cutting back or eliminating alcohol while trying to conceive is one of the simpler changes you can make.
Move Your Body, but Don’t Overdo It
Regular moderate exercise supports fertility by improving insulin sensitivity, reducing stress hormones, and helping maintain a healthy weight. Walking, swimming, cycling at a comfortable pace, and yoga all count.
Intense or vigorous exercise is where the picture shifts. High-intensity training can suppress the hormones responsible for your menstrual cycle, particularly if you’re not eating enough to replace the energy you’re burning. If your periods have become irregular or have stopped entirely and you exercise heavily, scaling back to moderate activity often helps restore ovulation. This doesn’t mean you need to stop moving. It means matching your calorie intake to your activity level and keeping most workouts at a conversational pace.
Prioritize Sleep
The hormones that trigger ovulation and sperm production, including luteinizing hormone (LH) and follicle-stimulating hormone (FSH), are regulated during deep sleep. Without enough of it, the normal release of these hormones can be disrupted. Most fertility specialists point to seven to nine hours per night as the target range.
Shift work, inconsistent bedtimes, and chronic sleep deprivation all appear to affect cycle regularity. If you’re struggling with sleep, focusing on a consistent wake time, limiting screens before bed, and keeping your room cool and dark are the changes most likely to help.
Track Your Fertile Window
Timing matters enormously. You’re most fertile in the few days leading up to ovulation and the day of ovulation itself. One of the most reliable ways to identify this window without any technology is monitoring your cervical mucus.
As you approach ovulation, cervical mucus becomes transparent, stretchy, and slippery, often compared to raw egg white. You may also notice a wet, smooth sensation. Research from the UNC School of Medicine confirms that the best chance of pregnancy occurs when intercourse happens on a day near ovulation when this type of mucus is present. After ovulation, mucus typically becomes thicker, stickier, or dries up.
Ovulation predictor kits (which detect an LH surge in urine) and basal body temperature tracking are other options. Combining two methods gives you a clearer picture than relying on one alone.
Keep Sperm Cool
Sperm production requires temperatures slightly below core body heat, which is why the testicles sit outside the body. Habits that raise scrotal temperature can meaningfully reduce sperm count and motility.
Hot tubs and saunas are the biggest offenders. In one study, regular sauna use (about two and a half hours every two weeks) decreased sperm counts by up to 50 percent. The good news: after men stopped the heat exposure, it took 10 to 12 weeks for counts to recover, and a separate study found that men who quit regular hot tub use saw an average increase in motile sperm counts of 491 percent within three months.
Laptops placed directly on the lap also contribute. Sitting with thighs together for an hour raises scrotal temperature by about 2°C, and a laptop adds another half degree on top of that. Using a desk or a thick lap pad helps. Tight underwear raises temperature by 0.5 to 0.8°C, though whether that alone is enough to cause fertility problems remains unclear. If you’re already dealing with a low sperm count, switching to looser boxers is a low-cost change worth making.
Reduce Exposure to Hormone Disruptors
Certain chemicals found in everyday products can interfere with reproductive hormones in both men and women. The three most common categories are bisphenols (found in hard plastics, can linings, and thermal receipt paper), phthalates (found in fragranced products, soft plastics, and vinyl), and parabens (found in many cosmetics and personal care products). All three mimic or block hormones involved in reproduction. Bisphenols act like weak estrogen in the body. Parabens bind to estrogen receptors. Phthalates have anti-androgenic activity, meaning they can interfere with testosterone and male reproductive development.
Pesticide residues on food are another concern. Organophosphate and pyrethroid insecticides have strong experimental evidence linking them to reduced testosterone production, oxidative stress in sperm, and damage to sperm DNA structure.
Practical steps to lower your exposure include switching to glass or stainless steel food containers, choosing fragrance-free personal care products, washing fruits and vegetables thoroughly (or buying organic for the most heavily sprayed crops), and avoiding microwaving food in plastic. You won’t eliminate every exposure, but reducing the biggest sources can lower your overall chemical burden meaningfully over a few months.
Manage Stress Thoughtfully
Chronic stress raises cortisol, which can suppress the reproductive hormone cascade in both men and women. The relationship is real but tricky: stressing about stress doesn’t help, and the effect size is harder to quantify than something like weight or diet. What the evidence supports is that practices reducing physiological stress, such as regular moderate exercise, adequate sleep, mindfulness, and maintaining social connections, tend to improve cycle regularity and overall hormone balance. These aren’t magic fixes, but they reinforce every other change on this list.