During pregnancy, you can eat most of the foods you already enjoy, with a few important exceptions and some added emphasis on nutrient-rich choices. The goal isn’t a restrictive diet. It’s making sure your meals consistently deliver the nutrients your baby needs to develop, while avoiding a short list of foods that carry real infection risks. Here’s a practical breakdown of what to eat, what to skip, and how much you actually need.
How Many Extra Calories You Need
Less than you probably think. During the first trimester, you don’t need any extra calories at all. In the second trimester, an additional 200 to 400 calories per day is typical, and in the third trimester, roughly 400 extra calories covers the increased demand. That’s about the equivalent of a handful of nuts with a piece of fruit, or a yogurt with granola. “Eating for two” is a myth that leads to unnecessary weight gain and complications.
Recommended total weight gain depends on your pre-pregnancy BMI. For a normal-weight woman (BMI 18.5 to 24.9), the target is 25 to 35 pounds over the entire pregnancy. If you started overweight, the range drops to 15 to 25 pounds. If you started underweight, 28 to 40 pounds is appropriate. For twin pregnancies, those numbers roughly double: 37 to 54 pounds at a normal starting weight.
Nutrients That Matter Most
A few nutrients do heavy lifting during pregnancy, and getting enough of them through food makes a real difference.
Folate
The recommended intake during pregnancy is 600 mcg per day, up from 400 mcg for non-pregnant women. Folate is critical for preventing neural tube defects in the earliest weeks. Dark leafy greens, lentils, chickpeas, asparagus, and fortified cereals are good food sources. Your body absorbs folic acid from fortified foods and supplements more efficiently than natural folate from whole foods. A prenatal vitamin typically covers the gap, but eating folate-rich foods on top of that is a smart habit.
Iron
Your blood volume increases dramatically during pregnancy, and iron is what keeps red blood cells functioning. Dietary iron comes in two forms: the kind found in animal proteins like lean red meat, poultry, and seafood is absorbed much more readily than the kind found in plant foods like spinach, beans, and fortified grains. If you’re relying on plant sources, pairing them with foods high in vitamin C (bell peppers, citrus, tomatoes) significantly boosts absorption. Calcium, on the other hand, interferes with iron absorption, so it helps to separate your calcium-rich foods from your iron-rich meals by an hour or two.
Choline and DHA
Choline supports your baby’s brain development and helps your liver process DHA, the omega-3 fatty acid essential for building brain and eye tissue. Most prenatal vitamins contain little or no choline, so food sources matter here: eggs (especially the yolks), beef liver, salmon, and soybeans are the richest options. For DHA specifically, eating low-mercury fish two to three times a week is the most reliable approach.
Calcium and Zinc
Calcium from dairy products like milk, yogurt, and cheese is absorbed more efficiently than calcium from plant sources like kale and broccoli, though those still contribute. For zinc, oysters are the single richest source, followed by meat, fish, eggs, and dairy. Plant-based zinc from beans, nuts, and whole grains is less available to your body because these foods contain compounds called phytates that block absorption.
Best Foods to Build Meals Around
You don’t need a complicated meal plan. A few categories of food, eaten regularly, will cover most of your nutritional bases.
- Eggs: One of the few foods that delivers both choline and protein in a single package. Two eggs provide roughly half of your daily choline needs.
- Salmon and sardines: Low in mercury, high in DHA and protein. Two to three servings a week hits the recommended range.
- Leafy greens: Spinach, kale, and Swiss chard provide folate, iron (nonheme), and calcium. Eating them with a squeeze of lemon improves mineral absorption.
- Legumes: Lentils, black beans, and chickpeas are loaded with folate, fiber, iron, and plant protein.
- Greek yogurt: High in calcium and protein, and easier on the stomach than milk for many pregnant women.
- Lean meats: Beef and poultry supply the most absorbable forms of iron and zinc.
- Whole grains: Oats, quinoa, and brown rice provide B vitamins, fiber, and steady energy.
- Berries, citrus, and bell peppers: Rich in vitamin C, which directly supports iron absorption from plant foods.
Fish You Can Safely Eat
Fish is one of the most nutrient-dense foods you can eat during pregnancy, and the FDA recommends 8 to 12 ounces per week from low-mercury options. A single serving is about 4 ounces, roughly the size of your palm, so you’re aiming for two to three servings weekly.
The “best choices” list is long and includes salmon, sardines, shrimp, tilapia, cod, catfish, pollock, canned light tuna (skipjack), trout, herring, anchovies, scallops, crab, lobster, flounder, sole, and haddock. These all have very low mercury levels. If you prefer fish from the “good choices” category (like albacore tuna or mahi-mahi), limit yourself to one serving per week instead. Avoid swordfish, shark, king mackerel, tilefish, bigeye tuna, marlin, and orange roughy entirely. These accumulate the highest mercury levels.
Foods to Avoid
The foods on the “avoid” list are there because of infection risk, not nutrition. Two organisms cause the most concern during pregnancy: listeria, a bacterium that can cross the placenta and cause miscarriage or stillbirth, and toxoplasma, a parasite found in undercooked meat and unwashed produce.
The FDA specifically warns pregnant women to avoid:
- Deli meats and hot dogs unless reheated until steaming hot. Listeria thrives in refrigerated, ready-to-eat meats.
- Soft cheeses made from unpasteurized milk, including queso fresco, queso blanco, and requesón. Notably, queso fresco-type cheeses carry risk even when made from pasteurized milk.
- Unpasteurized (raw) milk and any foods containing it.
- Raw or undercooked meat, poultry, and eggs. Cook meat to proper internal temperatures and skip runny yolks during pregnancy.
- Raw sprouts (alfalfa, clover, radish, mung bean). Bacteria can get inside the seed before the sprout grows, making washing ineffective.
- Raw fish and sushi made with raw fish. Cooked sushi rolls (like shrimp tempura or California rolls with imitation crab) are fine.
- High-mercury fish as listed above.
For all fruits and vegetables, wash and peel them thoroughly before eating. This simple step reduces exposure to both toxoplasma and listeria on produce surfaces.
Caffeine and Beverages
Caffeine under 200 mg per day does not appear to increase the risk of miscarriage or preterm birth, according to the American College of Obstetricians and Gynecologists. That’s roughly one 12-ounce cup of brewed coffee. Keep in mind that tea, chocolate, and some sodas also contain caffeine, so the total adds up faster than you might expect.
Ginger tea is generally safe and can help with nausea, especially in the first trimester. Peppermint tea is also considered safe in moderate amounts and may ease nausea and bloating. Raspberry leaf tea is often marketed for preparing the body for labor, though studies haven’t confirmed that benefit. It’s likely safe, but most practitioners suggest waiting until the third trimester to drink it. For other herbal teas, caution is warranted. Many herbs haven’t been studied in pregnancy, and large amounts of certain varieties could trigger contractions.
Alcohol has no established safe amount during pregnancy. The clearest choice is to skip it entirely.
Prenatal Vitamins Fill the Gaps
Even with excellent eating habits, a prenatal vitamin acts as insurance for the nutrients hardest to get from food alone. Folic acid is the most important example: your body absorbs the supplemental form nearly twice as efficiently as natural food folate. Iron supplements are also common, especially for women who start pregnancy with low stores or who eat mostly plant-based diets.
That said, some nutrients are absorbed better or just as well from food. Calcium from dairy, heme iron from meat, and choline from eggs all have high bioavailability that supplements don’t always match. The best approach is a nutrient-dense diet with a prenatal vitamin backing it up, not the other way around.
Managing Common Eating Challenges
First-trimester nausea can make all of this advice feel impossible. If certain healthy foods make you gag, eat what you can tolerate and don’t stress about perfection. Small, frequent meals tend to sit better than large ones. Bland carbohydrates like crackers, toast, and plain rice often stay down when nothing else will. Ginger in any form (tea, chews, even ginger ale with real ginger) has the most evidence behind it for easing nausea.
Cravings are normal and usually harmless. If you’re craving ice cream, have some. The problems start only when cravings for low-nutrient foods consistently replace meals that would otherwise provide iron, protein, or calcium. If you’re craving non-food items like dirt, ice, or chalk, that’s a condition called pica, and it often signals an iron deficiency worth checking out.
Constipation is extremely common, driven by hormonal changes and iron supplements. Fiber from fruits, vegetables, whole grains, and plenty of water is the most effective daily remedy. Prunes and pears are particularly helpful.