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Nutrition during pregnancy is a specialized dietary regimen providing optimal nutrients for the mother and developing fetus, supporting health and athletic performance.

For a more in-depth review, see the complete guide to proper nutrition — a foundational guide from the expert team at Sport Zona.

What it is

Nutrition during pregnancy represents a comprehensive approach to a woman's diet during conception, pregnancy, and breastfeeding, aiming to meet both her own needs and those of the developing fetus. It's not just about increasing calorie intake, but rather about shifting towards nutrient-dense foods. Its primary goal is to provide the necessary building blocks and energy for the growth and development of the fetus's tissues and organs, as well as to support the physiological changes occurring in the mother's body.

Biochemically and physiologically, significant adaptations occur during pregnancy that alter the absorption, metabolism, and excretion of nutrients. For example, the efficiency of iron absorption increases, yet its requirements drastically rise due to the expansion of the mother's blood volume and the fetus's needs. Changes in hormonal balance affect glucose metabolism, lipid profiles, and protein synthesis, highlighting the importance of a balanced intake of macronutrients and adequate hydration for maintaining homeostasis.

How it works

Nutrition during pregnancy works by ensuring a continuous supply of specific nutrients that are critical for the various stages of fetal development and supporting the mother's body. For instance, folic acid intake is crucial in early pregnancy to prevent neural tube defects. Iron is necessary for the synthesis of additional hemoglobin and oxygen supply, while calcium and vitamin D are essential for the formation of the fetus's bones and teeth.

The mechanism is also related to the regulation of blood sugar and energy levels, which is important for preventing gestational diabetes and maintaining the pregnant woman's energy, especially if she continues to train. The right food choices also provide fiber, which helps manage common issues like constipation. Key aspects include:

• Energy Provision: Increased caloric intake to cover metabolic needs.
• Micronutrient Balance: Focus on vitamins and minerals critical for fetal development.
• Immune Support: Foods rich in antioxidants and probiotics.
• Optimal Hydration: Maintaining bodily fluids.

Why it's important for athletes

For pregnant athletes, adequate nutrition is doubly important. It contributes to a healthy pregnancy and is also essential for maintaining athletic form, recovery from training, and preventing fatigue and injuries. While the recommended daily energy intake increases by about 300-500 kcal during the second and third trimesters, for actively training women, these needs can be even higher, depending on the intensity and duration of physical activity. For example, the American College of Obstetricians and Gynecologists (ACOG) recommends at least 150 minutes of moderate physical activity per week, which requires adequate energy support.

Specifically, protein intake is critical for muscle recovery and fetal growth, with recommendations increasing to about 1.1 g/kg of body weight per day. Iron is vital for preventing anemia, which can affect both maternal energy and fetal development, with a recommended daily intake of 27 mg, significantly more than for non-pregnant women. Omega-3 fatty acid supplements, particularly DHA, are linked to better fetal neurological development and can contribute to reducing post-exercise inflammation, with recommendations of about 200-300 mg of DHA daily. These precise needs underscore the importance of an individualized nutrition plan under the guidance of a specialist.

Related concepts

• Hydration — Proper hydration is extremely important during pregnancy, especially for athletes, to prevent dehydration, maintain blood volume, and regulate body temperature.
• Nutrient density — Nutrient density is key in pregnancy nutrition, as women need to consume enough vitamins and minerals without excessive calorie intake.
• Antioxidants in food — Antioxidant intake is important for pregnant athletes to combat oxidative stress from training and support the immune system.
• Probiotics — Probiotics can support digestive health during pregnancy and have a positive effect on the immune system of the mother and the developing fetus.