You made it to the final stretch. The third trimester is exciting, exhausting, and a little overwhelming all at once. Your body is working harder than ever, your baby is growing fast, and your nutrition needs have shifted again.
This is not the time to wing it. What you eat in these last weeks genuinely matters for your baby's development, your energy levels, and how your body prepares for labor and the postpartum period.
Here is what you need to know about eating well right through to the end.
Why Nutrition in Pregnancy Matters More Than Ever in the Third Trimester
By the time you reach this final trimester, your baby is gaining weight rapidly, developing brain function, building iron stores, and getting bones and teeth ready for life outside the womb. That puts real demand on your body.
According to the National Institutes of Health, pregnant women need additional calories, key nutrients, and adequate hydration throughout pregnancy, but the third trimester is when many of those needs peak. You are essentially finishing the construction work, and the building materials all come from what you eat.
The good news is that healthy eating does not have to be complicated. It just has to be intentional.
Key Nutrients You Need in the Third Trimester
Calcium for Bones and Teeth
Your baby's skeleton is hardening rapidly in these final weeks. Calcium is the mineral doing most of that work, and if your diet falls short, your body will pull calcium from your own bones to compensate.
The recommended intake goes up in the third trimester of pregnancy, so aim for dairy products like milk, yoghurt, and cheese, as well as leafy greens and fortified foods. Low-fat dairy options still deliver excellent calcium without unnecessary saturated fat.
Iron for Red Blood Cells and Energy
Iron is critical right now. Your body needs it to produce red blood cells that carry oxygen to both you and your baby. Low iron in the final trimester is linked to fatigue, low birth weight, and preterm birth.
Good sources of protein and iron include lean poultry, beans and peas, eggs, and fortified whole grains. Pairing iron with vitamin C helps your body absorb it more efficiently, so adding tomato or orange juice to an iron-rich meal is a smart move.
f your midwife or doctor has flagged low iron levels, iron supplements may be recommended alongside dietary changes.
Folate and Folic Acid
You may have heard more about folate and folic acid in the context of early pregnancy, and for good reason. Folate helps protect the brain and spinal cord and plays a role in preventing neural tube defects. While the neural tube forms early, folate remains important for fetal brain development throughout pregnancy.
The Dietary Guidelines for Americans recommend 600 micrograms (one microgram equals one millionth of a gram) of folate equivalent daily during pregnancy. Leafy greens, beans, and fortified grains are reliable sources.
Omega-3 Fatty Acids for Brain Development
Omega-3 fatty acids are essential nutrients for fetal brain and nervous system development.
The third trimester is when the baby's brain grows most rapidly, making omega-3 fatty intake particularly important during this stage of pregnancy.
Salmon is one of the best foods for omega-3s during pregnancy. Sardines are another solid option. Both are low in mercury and high in the healthy fats your baby needs. Aim for two to three servings of low‑mercury fish per week, as recommended by U.S. Department of
Agriculture and obstetrics guidelines.
Protein for Tissue Growth
Your baby is adding muscle and tissue at a fast pace. Protein supports that growth, as well as your own muscle repair and immune function. Sources of protein to prioritize include eggs, lean meat, poultry, fish, dairy, and legumes.
Foods to Eat More of in the Third Trimester
A well-balanced diet in the final trimester looks a lot like a healthy diet at any other point, just with a bit more attention to nutrient density.
- Whole grains like oats, brown rice, and whole wheat bread support energy levels and help manage nausea and constipation, which are common in the third trimester.
- Dairy foods like yoghurt and cheese provide calcium, protein, and vitamin D in one go.
- Leafy greens are packed with folate, iron, vitamin C, and fiber.
- Salmon and fatty fish deliver omega-3 fatty acids and high-quality protein.
- Beans, lentils, and peas are versatile sources of iron, folate, and fiber.
- Eggs offer protein, healthy fats, and choline, which supports fetal brain development.
- Nuts and seeds provide healthy fats, magnesium, and a quick, convenient snack.
Eating smaller, more frequent meals can also help when the growing baby starts pressing against your stomach, making large meals uncomfortable.
Foods to Avoid in the Third Trimester
Certain foods carry higher risks during pregnancy because of bacteria, parasites, or harmful compounds that could affect you or your baby.
Avoid raw or undercooked meat, undercooked eggs, and unpasteurized dairy. Raw milk and soft cheeses made from unpasteurized milk can harbor listeria, which poses serious pregnancy complications. Sushi made with raw fish should also be skipped.
Limit caffeine to under 200 milligrams per day. High caffeine intake has been linked to low birth weight and other concerns in pregnancy research.
How Many Calories Do You Actually Need?
In the second and third trimesters, most guidelines suggest adding around 300 to 450 calories a day above your pre‑pregnancy baseline. But exact needs vary depending on your starting weight, activity level, and whether you are carrying multiples.
Rather than counting every calorie, focus on making healthy food choices by leaning toward nutrient-dense foods that give you more nutrition per bite. A banana with almond butter, a bowl of lentil soup, or Greek yoghurt with berries all do far more for a pregnancy diet than the same calories from processed snacks.
Supporting Your Nutrition With a Prenatal Supplement
Even with the best intentions, getting every essential nutrient from food alone during the final weeks of pregnancy is a real challenge. Nausea can flare back up, appetite shifts, and certain foods can feel unmanageable.
A prenatal drink supplement helps fill those gaps consistently. For women who struggle with large pills or multiple capsules, Storkling's prenatal drink supplement offers a simpler approach.
It is designed to be mixed into water or a drink you already enjoy, making nutrition during pregnancy easier to stick to, especially when your routine is constantly changing and your due date is approaching fast.
The supplement was developed with clinical guidance for women trying to conceive, as well as for those in pregnancy and postpartum, so it covers the nutritional bases that matter most at each phase.
A Note on Working With Your Healthcare Team
Nutrition in the third trimester should always be guided in part by your own health picture.
Conditions like gestational diabetes, hypertension, or concerns flagged in obstetrics and gynecology appointments may require adjustments to your pregnancy diet. Always loop in your doctor, midwife, or dietitian when making significant changes to what you eat.
Conclusion
The final trimester is your body's strongest sprint. Calcium, iron, folate, omega-3 fatty acids, and protein are the nutrients you need most right now, and a balanced diet built around whole, nutrient-dense foods is the most reliable way to get them. A high-quality prenatal supplement can help bridge any gaps. Stay consistent, listen to your body, and ask your care team for support when you need it. You are almost there, and how you eat in these final weeks matters.