Nutrition or diet can significantly affect fertility in both men and women. While there is no single “fertility diet” guaranteed to help someone conceive, nutrition influences hormone balance, ovulation, sperm quality, body weight, inflammation, and overall reproductive health. Healthy eating habits may improve the chances of conception and support a healthier pregnancy.
Proper nutrition helps the body function optimally by supplying essential nutrients, including folic acid, iron, and vitamins, that support reproductive processes. Maintaining a healthy body weight is also important because being underweight or overweight may disrupt hormones and ovulation. Of note is that stress and insulin resistance, especially in women with polyendocrine metabolic ovarian syndrome (PMOS) (previously known as polycystic ovary syndrome: PCOS), can interfere with fertility, and healthy eating may help reduce these issues. Additionally, foods that support vaginal pH balance may help sperm survive longer and improve the chances of fertilisation.
One major category of food to avoid while trying to conceive is caffeine. Caffeine may interfere with nutrient absorption and metabolism and could potentially increase miscarriage risk and pregnancy complications. Sources of caffeine include coffee, tea, energy drinks, chocolate, and some medications. The recommendation is to reduce or limit caffeine intake and discuss safe levels with a healthcare provider.
Alcohol is another major substance to avoid. It may reduce fertility in both males and females, disrupt hormones, interfere with menstrual cycles, lower libido, and negatively affect sexual function. It is recommended to abstain from alcohol entirely while trying to conceive, because of its association with miscarriage and birth defects.
Processed foods are strongly discouraged. Heavily processed foods are often high in unhealthy fats, salt, and sugar while lacking essential nutrients. Examples include frozen meals, processed meats, crackers, packaged snacks, and sugary yoghurt drinks. These foods are linked to inflammation, poor semen quality, and obesity, all of which may negatively affect fertility. Instead, whole foods such as fruits, vegetables, whole grains, lean proteins, nuts, and healthy fats are recommended.
Mercury is known to be harmful to the nervous system and particularly dangerous for developing foetuses. Fish specifically listed as high in mercury include shark, swordfish, king mackerel, and tilefish. Lower-mercury alternatives such as salmon, shrimp, and pollock are suggested instead.
Unhealthy fats such as trans fats, excessive saturated fats, and certain omega-6 fatty acids may contribute to inflammation and fertility problems. These fats are found in fast food, margarine, processed baked goods, corn oil, soybean oil, and sunflower oil. Healthier alternatives are olive oil, avocados, nuts, seeds, and full-fat dairy products, which are known to be more supportive of fertility than low-fat dairy.
Sugary drinks and sodas are problematic. Excessive sugar consumption may increase inflammation, age reproductive organs more rapidly, lower egg quality, and even reduce IVF success rates. High sugar intake is therefore discouraged for both men and women trying to conceive.
Foods that may support fertility
Focus on minimally processed foods rich in nutrients. These include fruits, vegetables, legumes, whole grains, lean proteins, nuts, seeds, olive oil, berries, avocados, and fatty fish like salmon. Folate-rich foods support early foetal neural tube development. Iron-rich foods play a significant role in oxygen transport and in supporting pregnancy.
In conclusion
Fertility health is broader than just avoiding certain foods. It is recommended to combine healthy eating with exercise, stress management, adequate sleep, routine health testing, and proper supplementation when necessary. Nutrition and lifestyle together can create a healthier environment for conception and pregnancy.
Read this interesting blog by Reproductive Medicine Associates to get more insight.
