Vegan, Vegetarian and Expecting? What You Actually Need to Know About Protein in Pregnancy
Vegan, Vegetarian and Expecting? What You Actually Need to Know About Protein in Pregnancy
Written by Jess Rosenberg, moode Founder | Reviewed June 2026
I was vegetarian for years. Then I got pregnant, and my naturopath told me to stop.
At the time I felt depleted and exhausted in a way I could not explain. My energy was low, my iron was low, and no amount of lentils and leafy greens seemed to make a difference. My naturopath was direct: the demands of pregnancy, on top of a plant-based diet that was already leaving me depleted, were going to be difficult to meet without animal protein. I listened to her. I never went back to vegetarianism.
Years later, when I studied nutrition and naturopathy myself after the birth of my second son, I understood exactly why she gave me that advice. I also came to understand that a plant-based pregnancy is genuinely possible, it just requires a level of nutritional planning that most people are not told about, and a quality prenatal supplement that fills the gaps a whole-food plant-based diet alone cannot reliably close.
This is what I wish someone had told me before I started trying.
Why plant-based pregnancy nutrition is harder than it looks
A plant-based diet can absolutely support a healthy pregnancy. But pregnancy dramatically increases the demand for specific nutrients - and several of the most critical ones are either absent from plant foods entirely, or present in forms the body absorbs poorly.
This is not a reason to abandon your values. It is a reason to plan with more care than the average pregnancy advice column suggests.
The nutrients that matter most in a plant-based pregnancy
Protein
Vital for developing foetal tissue, your uterus and breast tissue. The good news is plant sources are genuinely adequate if you are eating enough variety. Lentils, beans, tofu, quinoa, tempeh and nuts all contribute. The challenge is volume. Plant protein is less bioavailable than animal protein, which means you need more of it to achieve the same effect. A palm-sized serve at every meal is the minimum, not a guideline.
Calcium
Crucial for your baby's bone and teeth development, and for protecting your own bone density as your body prioritises the baby's needs. Plant sources include broccoli, fortified plant milks and calcium-set tofu. The absorption rate from plant sources is lower than from dairy, so fortified foods matter here.
Omega-3 fatty acids
Important for your baby's brain development. Flaxseeds, chia seeds, walnuts and avocado provide ALA, the plant form of omega-3. The problem is that ALA must convert to DHA and EPA - the forms the brain actually uses - and that conversion is inefficient in most people. Algae-based DHA supplements are the most reliable solution for plant-based women.
Iron
Needed for increased blood volume and foetal growth. Plant-based iron (non-haem iron) is significantly less absorbable than haem iron from animal sources. Spinach, lentils and fortified cereals all help, particularly when paired with vitamin C-rich foods to boost absorption. But if your ferritin was already low before pregnancy - which is common in vegetarians and vegans - food alone is rarely enough.
Zinc
Supports cellular growth and foetal immune system development. Pumpkin seeds, lentils, chickpeas and quinoa are good plant-based sources, though absorption is reduced by phytates present in many plant foods. Soaking and sprouting legumes before eating them improves zinc bioavailability significantly.
Vitamin B12
Crucial for the development of the baby's nervous system, including the brain and spinal cord. B12 is found almost exclusively in animal products. If you are vegan or largely plant-based, supplementation is not optional - it is essential. Do not rely on nutritional yeast alone.
Choline
Essential for embryonic brain development, liver function and placenta function. Tofu, soy nuts and soy milk contain choline, but reaching the recommended 450mg daily from plant sources alone is genuinely difficult. This is one of the most under-discussed nutrients in pregnancy, and one of the most important.
Where a prenatal supplement fits in
A whole-food plant-based diet covers a lot of ground. But even the most carefully planned plant-based pregnancy will have gaps - particularly around B12, DHA, choline and iron. A quality prenatal is not a substitute for eating well. It is the insurance policy for the nutrients that food alone cannot reliably deliver at the doses pregnancy demands.
The Prenatal by moode contains 300mg of choline, calcium folinate, zinc and a full B complex including B12. It is 100% vegan - formulated with plant-derived Vitamin D3, Vegan Vitamin K1, vegan capsules and all excipients free from animal derivatives. Always read the label and follow directions for use.
A note on breaking your vegetarianism
If you are reading this and feeling torn, I understand. I made the decision to eat animal products during pregnancy and I do not regret it. But I also know that a well-planned plant-based pregnancy is possible, and that plenty of women have done it with the right support.
What matters more than the label - vegan, vegetarian, omnivore - is whether your body is actually getting what it needs. Get a full blood panel before you conceive if you can. Check your ferritin, B12, zinc and folate levels. Know where your gaps are before pregnancy amplifies them.
And work with a naturopath or dietitian who specialises in plant-based prenatal nutrition. The advice I received changed the course of my pregnancy. Good clinical guidance is worth more than any amount of online research, including this article.
moode answers your questions about plant-based pregnancy nutrition
Can you have a healthy pregnancy on a vegan diet?
Yes, with careful planning and the right supplementation. The key nutrients to monitor are B12, iron, choline, zinc, calcium and DHA. A full blood panel before conception and a quality vegan prenatal supplement are both strongly recommended.
Do I need to eat meat when pregnant if I am vegetarian?
Not necessarily, but your protein, iron and B12 intake need close attention. If your ferritin or B12 levels are low going into pregnancy, it is worth discussing with a naturopath or GP whether dietary changes or targeted supplementation are needed. Every woman's starting point is different.
What is the best plant-based source of protein in pregnancy?
Lentils, chickpeas, tofu, tempeh, quinoa, edamame and hemp seeds are all excellent. Combining sources across the day - rather than relying on one - gives you a broader amino acid profile. Aim for a serve at every meal and most snacks.
Is folic acid the same as folate?
No. Folic acid is the synthetic form and must be converted by the body before it can be used. Calcium folinate is an active form that does not require conversion - making it more accessible for women whose bodies do not convert folic acid efficiently, which includes a significant proportion of the population.
When should I start taking a prenatal vitamin?
Ideally three months before you start trying to conceive, to build nutrient levels before pregnancy begins. If that window has passed, start as soon as possible. The first trimester is when foetal neural tube development occurs - folate and choline are most critical in these early weeks.
About the author
Jess Rosenberg is the founder of moode and a trained nutritionist and naturopath. She created The Prenatal after her own experience of pregnancy left her questioning the quality of what was available in the Australian market. Learn more about moode's story.
