Nutrition During Pregnancy: Essential Nutrients and Lifestyle Tips
Pregnancy may well be the most transformative period in a woman's life. During this special phase, your body changes impressively: hormonally, physically, and emotionally. Your blood volume increases, your hormone balance shifts, your immune system adapts, and your need for energy and nutrients significantly rises. Hormones like estrogen, progesterone, and hCG orchestrate wondrous processes in your body. However, these hormones can also lead to fatigue, mood swings, or nausea. Pregnancy is a period during which your body builds new life with unprecedented precision. Every day, processes occur that are of immense significance to both you and your baby.
What many women don't know is that these changes can begin even before actual conception. Estrogen and progesterone ensure that the uterine lining becomes suitable for implantation, blood flow to the uterus increases, and the immune system adapts. Egg maturation also occurs under the influence of hormonal signals. During this preconception period, it's crucial that essential nutrients are sufficiently present, as they play a vital role in the embryo's development immediately after fertilization (1). What you eat, how you sleep, and how you manage stress can directly influence the environment in which new life emerges during this time. In this blog, I'll guide you through what your body needs during pregnancy: from essential nutrients to exercise, sleep, and stress management.
Nutrition as a Foundation
The practical nutrition tips in this blog are partly inspired by Lily Nichols' book Real Food for Pregnancy. Her vision is clear: pregnancy requires nutrient-dense, unprocessed foods rich in bioavailable nutrients. Not just enough calories, but especially enough building blocks.
During pregnancy, not only a baby grows, but also a placenta. The placenta is a completely new organ that facilitates the exchange of oxygen and nutrients. Additionally, blood volume increases by 30–50%, and the uterus significantly grows (1). All of this demands sufficient proteins, fats, vitamins, and minerals. Your body is literally building new tissue, new structures, and a completely new organ. This requires high-quality building blocks. Furthermore, nutrition before pregnancy is also very important. The quality of the egg cell, hormonal balance, and early embryonic development are strongly influenced by the mother's nutritional status. Essential nutrition during the preconception phase (ideally 3–6 months before pregnancy) is critically important.
Proteins
Proteins are the building blocks for new tissue. They support the growth of the placenta, uterus, breasts, and fetal body. Many women consume less protein than needed. Depending on body weight and trimester, a daily intake of approximately 80–100 grams is often recommended. Quality sources include eggs, fish, meat, poultry, (grass-fed) meat, dairy, and collagen-rich products. A diet consisting mainly of simple carbohydrates can lead to insulin fluctuations and unstable blood sugar levels.
Folate/Folic Acid (Vitamin B11)
Folate is essential for cell division and the early development of the nervous system. Because the neural tube closes in the first few weeks, folic acid supplementation around conception is advised (3 months before pregnancy) (2). The recommended amount is 400 mcg. At the same time, a diet rich in natural folates remains important. Green leafy vegetables, avocado, and liver are good sources. Liver also contains a lot of vitamin A (retinol). High intake of retinol during pregnancy has been linked to an increased risk of birth defects. Therefore, it is advised to eat liver in moderation, for example, about 50–75 grams once a week at most (3).
Iodine
Iodine supports the production of thyroid hormones. These hormones play an important role in the mother's metabolism and the child's brain development (3). Seafood, shellfish (do not eat raw during pregnancy), eggs, and dairy contain iodine. If your diet contains few of these products, extra attention or supplementation may be necessary.
Iron
Due to the increase in blood volume, iron requirements significantly rise. Iron is needed for the production of hemoglobin, which transports oxygen (1). Heme iron from animal sources is absorbed more efficiently than plant-based iron. A low iron status can lead to fatigue. Therefore, iron intake and status are often monitored during pregnancy.
Choline
Choline supports the development of the brain and nervous system and plays a role in cell membranes (5). Egg yolks and meat are rich sources. Many women do not meet the recommended amount through diet alone, making conscious attention to intake important.
Omega-3 Fatty Acids (DHA)
DHA is a structural fatty acid for the brain and eyes. Fatty fish such as salmon, herring, and sardines provide these fatty acids in an easily absorbable form. Again, be careful not to consume raw fish during pregnancy!
Additionally, natural fats such as olive oil, butter, and avocado support energy supply and hormonal balance.
Vitamin D and Calcium
During pregnancy, the need for calcium increases, especially in the third trimester when the baby's bone development accelerates. The body absorbs calcium more efficiently, but sufficient intake remains important for both the child's skeletal development and the mother's bone health (1). Vitamin D supports calcium absorption and also plays a role in the immune system. Since the baby's vitamin D status depends on the mother's, sufficient sunlight and, if necessary, supplementation are extra important during this period.
Blood Sugar Balance and Gestational Diabetes
A large part of Lily Nichols' book focuses on blood sugar regulation. During pregnancy, insulin sensitivity changes, especially in the second and third trimesters.
Strong blood sugar fluctuations can lead to:
- Excessive fetal growth
- Increased insulin load
- Higher risk of gestational diabetes
Therefore, it is important to eat meals during pregnancy that are rich in sufficient protein, healthy fats, and complex carbohydrates. This keeps blood sugar as balanced as possible.
Exercise During Pregnancy
Exercise supports metabolism, blood circulation, and insulin sensitivity. During pregnancy, the goal shifts from performance to support and maintenance. Regular walking, light strength training, mobility exercises, and attention to the pelvic floor can contribute to stability and muscle preservation. Due to the hormone relaxin, ligaments become more flexible, which can make joints more sensitive. Therefore, controlled, gentle movement is often appropriate. Exercise can also help regulate mood and energy levels.
You don't have to train harder, but you do need to keep moving. Gentle, consistent movement, in particular, supports the body during this period of change.
Sleep and Recovery
Sleep is a crucial recovery factor. During pregnancy, intensive hormonal and metabolic processes occur. Sufficient sleep supports these adaptations. Hormonal changes can affect sleep, especially in the first and third trimesters. A consistent sleep rhythm, a dark and cool bedroom, and limiting bright light in the evening can contribute to better sleep quality.
Recovery is not a luxury during pregnancy, but an essential part of the process where your body supports new life.
Managing Stress
In addition to physical changes, pregnancy also brings emotional changes. Chronic stress affects cortisol, sleep, and blood sugar regulation, among other things.
Supporting the autonomic nervous system can help maintain balance. Slow nasal breathing with a prolonged exhalation stimulates the parasympathetic system, which is involved in rest and recovery. Additionally, social support, realistic expectations, and sufficient rest periods play an important role in reducing mental burden. Pregnancy does not demand perfection, but rather gentleness, rest, and trust in the process your body is undergoing.
Conclusion
Pregnancy is a period of intense building and adaptation. By investing in nutrient-dense food, targeted supplementation where necessary, appropriate exercise, sufficient sleep, and conscious stress regulation, you support the natural processes occurring in your body.
It is often the small daily choices—what you eat, how you rest, and how you care for yourself—that together make a significant contribution to the health of both mother and child. Not out of perfection, but out of physiological support.
Ultimately, pregnancy remains one of the most extraordinary processes in the human body: a beautiful biological wonder where, from two cells, a completely new life slowly emerges.
References
- Jouanne, M., Oddoux, S., Noël, A., & Voisin-Chiret, A. S. (2021). Nutrient Requirements during Pregnancy and Lactation. Nutrients, 13(2), 692. https://doi.org/10.3390/nu13020692
- Greenberg, J. A., Bell, S. J., Guan, Y., & Yu, Y. (2011). Folic Acid supplementation and pregnancy: more than just neural tube defect prevention. PubMed, 4(2), 52–
- Rothman, K. J., Moore, L. L., Singer, M. R., Nguyen, U. D., Mannino, S., & Milunsky, A. (1995). Teratogenicity of high vitamin A intake. New England Journal of Medicine, 333(21), 1369–1373. https://doi.org/10.1056/nejm19951123333210159. https://pubmed.ncbi.nlm.nih.gov/22102928
- Organization of Teratology Information Specialists (OTIS). (2025, April 1). Iodine. MotherToBaby | Fact Sheets - NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK582771/
- Jaiswal, A., Dewani, D., Reddy, L. S., & Patel, A. (2023). Choline supplementation in pregnancy: Current evidence and implications. Cureus, 15(11), e48538. https://doi.org/10.7759/cureus.48538
