Several lifestyle changes can meaningfully improve your chances of conceiving, from shifting what you eat to managing stress and sleep. Fertility is influenced by dozens of interconnected factors, and while no single habit guarantees pregnancy, the cumulative effect of optimizing your diet, body weight, activity level, sleep, and environment can make a real difference for both partners.
Eat a Mediterranean-Style Diet
Of all the dietary patterns studied for fertility, the Mediterranean diet has the strongest evidence behind it. This eating style emphasizes vegetables, fruits, whole grains, legumes, nuts, olive oil, and fish while limiting red meat and processed foods. In a study of women under 35 undergoing fertility treatment, those who followed a Mediterranean diet most closely had a pregnancy rate of 50%, compared to 29% among those with the lowest adherence. Live birth rates showed a similar gap: 48.8% versus 26.6%.
The effect was dose-dependent. For every five-point increase on a Mediterranean diet scoring scale, women under 35 had 2.7 times greater odds of both conceiving and delivering a live baby. The benefits likely come from the diet’s combination of antioxidants, healthy fats, and anti-inflammatory compounds, all of which support egg quality and hormonal balance. You don’t need to overhaul your kitchen overnight. Start by swapping refined grains for whole ones, cooking with olive oil, and adding a few extra servings of vegetables and fish each week.
Get to a Healthy Weight
Body weight has a direct effect on ovulation. The BMI range associated with the best fertility outcomes is 18.5 to 24.9. Being significantly above or below that range disrupts the hormonal signals that trigger egg release each month. In women with a higher BMI, excess body fat increases estrogen production, which can suppress the hormonal cycle. In women who are underweight, the body may interpret low energy reserves as a signal that it’s not safe to sustain a pregnancy, and ovulation can stop entirely.
For men, carrying excess weight is linked to lower sperm concentration and reduced testosterone. Even modest weight loss (5 to 10% of body weight) can restore more regular ovulation in women and improve sperm parameters in men. The key is gradual, sustainable change rather than crash dieting, which can itself disrupt your cycle.
Move Your Body, but Don’t Overdo It
Moderate, regular exercise supports fertility by improving insulin sensitivity, reducing inflammation, and helping maintain a healthy weight. Walking, swimming, cycling at a comfortable pace, and yoga are all good choices. The trouble starts at the extreme end. Intense, prolonged endurance training can suppress ovulation and shorten the luteal phase (the window after ovulation when a fertilized egg would implant). The body interprets constant high-intensity exertion as physical stress and may dial down reproductive function in response.
If you’re currently doing heavy training, like marathon preparation or daily high-intensity sessions, and you’re having trouble conceiving, it’s worth pulling back to moderate activity and seeing whether your cycle becomes more regular. For men, excessive exercise can temporarily lower testosterone and sperm quality, though moderate activity improves both.
Protect Your Sleep
Sleep does more than restore energy. It directly regulates the hormones that control your menstrual cycle and sperm production. Melatonin, the hormone your body produces in darkness, helps coordinate the release of reproductive hormones. When sleep is disrupted, melatonin drops and other hormones shift out of their normal rhythm.
Research on night shift workers illustrates how significant this can be. Women who slept during the day instead of at night had melatonin levels roughly 38% lower than when they slept on a normal schedule. At the same time, their levels of follicle-stimulating hormone (FSH) jumped about 51% and luteinizing hormone (LH) rose about 46%. These hormones need to rise and fall in a precise pattern to trigger ovulation. When they’re chronically elevated or mistimed, that pattern breaks down.
Aim for seven to nine hours of sleep in a dark room on a consistent schedule. If you work night shifts, talk to your employer about rotating to day shifts while trying to conceive, or at minimum, keep your sleep schedule as regular as possible on days off.
Lower Your Stress Levels
Chronic stress raises cortisol, and elevated cortisol interferes with the hormones needed for conception. In one study, women who successfully conceived had significantly lower cortisol levels at every point in their cycle compared to those who didn’t. On the third day of the cycle, cortisol averaged 113 µg/dL in women who became pregnant versus 162 µg/dL in those who didn’t. During and after ovulation, the gap widened further. High cortisol after ovulation was negatively correlated with progesterone, estrogen, follicle size, and uterine lining thickness, all factors that need to be robust for implantation.
Salivary alpha-amylase, another biological marker of stress, was also higher in women who didn’t conceive. The practical takeaway: stress reduction isn’t just a feel-good suggestion. It has measurable hormonal effects. Mindfulness meditation, regular walks in nature, therapy, breathing exercises, and cutting back on overcommitments are all reasonable strategies. The specific method matters less than finding something that genuinely brings your nervous system down a notch on a daily basis.
Consider Targeted Supplements
A few supplements have evidence supporting their use for fertility, though none are magic bullets.
- CoQ10 plays a central role in mitochondrial energy production, and egg cells are among the most energy-demanding cells in the body. As you age, your cells produce less CoQ10, which may contribute to declining egg quality. Supplementation helps mitochondria generate the energy eggs need to mature and divide properly. It also acts as an antioxidant, protecting eggs and sperm from oxidative damage. Doses used in fertility studies range widely, from 180 mg to 1,200 mg per day, and there’s no established standard dose for fertility specifically.
- Folate is essential well before pregnancy, not just during it. It supports DNA synthesis and cell division, both critical during the earliest stages of conception and embryo development. Most guidelines recommend at least 400 mcg daily, ideally starting a few months before you try to conceive.
- Lycopene is a potent antioxidant found in cooked tomatoes, watermelon, and pink grapefruit. Oxidative stress in semen is one cause of low sperm motility, and lycopene may help counteract that. A clinical trial is testing whether 14 mg of lycopene daily for 12 weeks improves total motile sperm count, sperm concentration, and the balance of oxidants to antioxidants in semen. Early evidence from other studies suggests lycopene improves testicular function in healthy men.
Supplements work best as part of an overall healthy lifestyle, not as a substitute for one. Quality varies between brands, so look for third-party tested products.
Reduce Exposure to Endocrine Disruptors
Certain chemicals found in everyday products interfere with your hormones in ways that directly harm fertility. The two most studied are BPA and phthalates.
BPA, found in some plastics, canned food linings, and thermal receipt paper, mimics estrogen and also binds to androgen receptors. In men, it disrupts testosterone production by interfering with the cells in the testes responsible for making it. It can damage testicular cells and impair the normal progression of sperm development. In women, BPA exposure during critical developmental windows can alter hormonal signaling pathways.
Phthalates, common in fragranced personal care products, vinyl flooring, and soft plastics, reduce testosterone production through a different mechanism. They block a key protein that transports cholesterol into mitochondria, a step required for testosterone synthesis. Phthalates also directly harm sperm. Lab studies show they reduce sperm motility by preventing sperm from generating enough energy to swim, and they trigger abnormal reactions on the sperm surface that can interfere with fertilization.
To reduce your exposure: switch to glass or stainless steel food containers, avoid heating food in plastic, choose fragrance-free personal care products, and check labels for “phthalate-free.” Wash your hands after handling receipts. These changes won’t eliminate exposure entirely, since these chemicals are widespread, but they can meaningfully lower the dose your body absorbs daily.
Limit Alcohol and Be Cautious With Caffeine
Heavy alcohol use clearly harms fertility in both sexes. In women, it disrupts ovulation and hormonal balance. In men, it lowers testosterone and impairs sperm production. Even moderate drinking (a few drinks per week) has been associated with longer time to conception in some studies, though the evidence at low levels is less definitive. If you’re actively trying to conceive, cutting alcohol entirely is the safest approach.
Caffeine is more nuanced. Current evidence isn’t strong enough to say definitively that caffeine impairs fertility. Most guidelines suggest staying under 200 mg per day (roughly one 12-ounce cup of coffee) as a precaution while trying to conceive. There’s no compelling reason to eliminate it completely, but if you’re drinking several cups a day, scaling back is a reasonable step.
Don’t Forget Male Fertility
Nearly half of all fertility challenges involve a male factor, yet most conversations about natural fertility focus on women. Everything discussed above, diet, weight, sleep, stress, toxin exposure, and supplements, applies to men too. Sperm take about 72 days to mature, so any lifestyle change a male partner makes needs roughly three months to show up in sperm quality. Keep the testes cool by avoiding prolonged hot tub use, tight underwear, and laptops resting directly on the lap. Heat impairs sperm production, and this is one of the simplest fixes available.
Couples who approach fertility as a shared project, making changes together, tend to stick with those changes longer and reduce the emotional burden that often falls disproportionately on one partner.