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Your pre-conception diet
Getting Pregnant

Your pre-conception diet

3 min read
Key takeaways
3 min
  • Eat omega-3 rich fish like salmon and sardines to increase conception chances and support baby's brain development, while avoiding high-mercury fish like swordfish.
  • Include folate-rich vegetables like spinach, broccoli, and avocado to improve fertility and reduce risk of neural tube defects in your baby.
  • Consume iron-rich foods like lean beef, lentils, and nuts paired with vitamin C sources to prevent anemia and reduce ovulation problems.
  • Follow a Mediterranean diet pattern with whole grains, healthy fats, and plenty of vegetables to naturally boost fertility rates.
  • Avoid processed foods, trans fats, and excessive sugar which can negatively impact fertility and overall reproductive health.

A healthy pregnancy starts with pre-conception nutrition including omega-3 rich fish, folate-rich leafy greens, iron-rich lean proteins and legumes, plus following a Mediterranean diet pattern. Avoid processed foods, high-mercury fish, and excessive sugar to optimize fertility and prepare your body for pregnancy.

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While there are no specific dietary recommendations for women planning to become pregnant, there are general guidelines that can benefit your overall health. Here are a few foods that are excellent stapes in your diet, especially as you prepare to become pregnant and want to take care of your body.

Fish

Research has proven that eating certain fish rich in omega-3 fatty acids can increase your chances of conception [1]. These fatty acids also benefit baby’s brain development when eaten as part of your pregnancy diet [2, 3].

While you can enjoy both saltwater and sweetwater fish, not all fish are recommended across the board. Swordfish, marlin, and shark are best avoided, as they contain large amounts of mercury. Tuna should also be limited to two servings per week [4].

Vegetables and greens

These highly nutritious foods are recommended in unlimited quantities. Spinach, broccoli, Brussels sprouts, avocado, and romaine lettuce are especially recommended for their high folic acid content. Folic acid improves fertility and lowers the risk of baby developing neurological pathologies [3, 5, 6].

Beef, nuts, and legumes

Beef, beans, chickpeas, lentils, walnuts, cashews, and pistachios are all high in iron [7]. This trace mineral is essential for the production of red blood cells, which carry oxygen. During pregnancy, you need more iron than usual, since your body is supplying oxygen not only to your organs and tissues, but to baby’s as well [4]. In addition, research shows that consuming foods rich in iron reduces the risk of anovulation (when ovaries do not release an egg) [8].

There are two important details to note. Firstly, iron is best absorbed by your body when you also consume enough vitamin C. Eat your beef with broccoli [4], or dress your lentils with lemon juice. Secondly, try not to drink tea with your iron-rich foods, as its polyphenols interfere with the body’s absorption of iron [9].

Superfood diet idea: Mediterranean

A Mediterranean diet covers many of the foods mentioned above. It includes lots of fruit and vegetables, fish, nuts, seeds, and healthy oils such as olive and avocado. It is generally low in animal fats. It also includes healthy whole grains, which do not spike your blood sugar like white flour and refined carbohydrates do [10]. Not only is a Mediterranean diet recommended for general health, but it is proven to increase the chance of conception [3].

Foods to avoid

Avoid consuming fast food, canned meats and other highly processed foods, sweets, and sodas. Studies show that foods high in trans fats and sugar decrease fertility [3].

Of course, please don’t read too much into its effects on fertility; eating these foods will not prevent pregnancy [3] and should not be thought of as contraception! And anyway, doctors and nutritionists discourage anyone - male or female, pregnant or not - from eating large amounts of these foods, as they lead to the development of diabetes, obesity, and other chronic conditions [11, 12].

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Frequently asked questions

Focus on omega-3 rich fish, folate-rich leafy greens like spinach, iron-rich foods like lean beef and legumes, and follow a Mediterranean diet pattern. These foods boost fertility and prepare your body for a healthy pregnancy.

A healthy pre-conception diet can significantly improve fertility by providing essential nutrients like omega-3 fatty acids, folic acid, and iron. Studies show Mediterranean diets increase conception rates while processed foods high in trans fats decrease fertility.

Salmon, sardines, and other low-mercury fish rich in omega-3s are excellent choices. Avoid high-mercury fish like swordfish, marlin, and shark, and limit tuna to two servings per week.

Folic acid improves fertility and significantly reduces the risk of neural tube defects in babies. Get it naturally from leafy greens, broccoli, Brussels sprouts, and avocado as part of your pre-conception diet.

Limit processed foods, fast food, sugary drinks, and foods high in trans fats as they can decrease fertility. Also avoid high-mercury fish and don't drink tea with iron-rich meals as it interferes with iron absorption.

Medical Disclaimer

This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or qualified health provider with any questions you may have regarding a medical condition.

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Reviewed by healthcare professionals · Updated January 15, 2025

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