A vegan diet can be practical and nourishing, but it works best when a few key nutrients are planned on purpose. This guide keeps the focus simple: what to pay attention to, what foods can help, and when to ask a health professional.
This is general information only. If you are pregnant, breastfeeding, feeding children, managing a medical condition or worried about deficiencies, speak with a GP, accredited practising dietitian or relevant health professional.
Vitamin B12 is the big one
Healthdirect says people following a vegan diet may not get enough vitamin B12 from diet alone and recommends B12 supplements to avoid deficiency. Vegan Australia’s FAQ also highlights B12 as a nutrient that needs reliable supplementation or fortified foods.
The practical takeaway: do not rely on mushrooms, sea vegetables, tempeh or guesswork for B12. Use a reliable supplement or properly fortified foods, and ask your doctor about testing if you are concerned.
Protein is usually about variety
Healthdirect lists legumes, chickpeas, lentils, beans, tofu, soy products, nuts, seeds and wholegrains as useful plant protein sources. You do not need every amino acid in every bite, but eating a variety of plant protein sources across the day is a sensible habit.
- Breakfast: oats with soy milk, nuts or seeds.
- Lunch: chickpea wrap, tofu bowl or lentil soup.
- Dinner: bean chilli, dhal, tempeh stir-fry or pasta with lentil sauce.
Iron needs vitamin C support
Plant foods contain non-haem iron. Healthdirect explains that vitamin C can help the body absorb this type of iron, so pair iron-rich foods with fruit or vegetables rich in vitamin C.
Useful vegan iron sources include lentils, beans, chickpeas, tofu, tempeh, pumpkin seeds, sunflower seeds, nuts, wholegrain cereals and some vegetables. Easy pairings include lentil dhal with tomato, tofu stir-fry with capsicum, or chickpea salad with lemon juice.
Calcium is easier when plant milk is fortified
Healthdirect lists calcium-set tofu, calcium-fortified plant milks, tahini, some nuts and leafy green vegetables as vegan calcium sources. If plant milk is replacing dairy milk in your diet, check the label for calcium fortification.
Australian supermarket shelves often include fortified soy, oat, almond and other plant milks, but not every product is fortified. The label matters.
Omega-3 needs a plan too
Healthdirect notes that flax, chia and hemp seeds and oils provide short-chain omega-3 fats, while long-chain omega-3 fats are found in fish, seafood and seaweed. It also notes that vegans can use an algal-based omega-3 supplement to help meet long-chain omega-3 needs.
A simple routine might include ground flaxseed or chia with breakfast and a conversation with a dietitian or doctor about whether an algal supplement suits your needs.
Vitamin D depends on more than diet
Healthdirect explains that vitamin D supports bone health and immune function, and that some plant-based dairy alternatives and margarines are fortified. Sun exposure, skin tone, location, season, clothing, sunscreen use and lifestyle can all affect vitamin D status.
If you are concerned, ask your doctor about a vitamin D test rather than guessing.
A simple daily checklist
- Take a reliable B12 supplement or use reliable fortified foods.
- Include legumes, tofu, tempeh, beans, nuts, seeds or wholegrains for protein.
- Pair iron-rich foods with vitamin C-rich fruit or vegetables.
- Choose calcium-fortified plant milk if it replaces dairy milk.
- Include flax, chia, hemp or walnuts, and consider algal omega-3 advice if needed.
- Ask for professional advice for pregnancy, breastfeeding, children or health concerns.
FAQs
Do vegans in Australia need B12?
Yes, B12 needs deliberate attention. Healthdirect recommends B12 supplements for people following a vegan diet to avoid deficiency, and Vegan Australia also highlights supplementation or fortified foods.
Can vegan diets be suitable for children?
Healthdirect says careful planning is needed for vegetarian or vegan diets for babies and children, and recommends speaking with a doctor, child health nurse or dietitian to ensure nutrient needs are met.
Should I see a dietitian?
It is a good idea if you are starting a vegan diet and want personalised advice, especially if you have a history of iron deficiency, are pregnant or breastfeeding, or are planning food for children.
Keep learning with the community: Subscribe on Substack, join the Facebook group, or visit r/vegansinaustralia.
Sources and fact-check date: Fact-checked on 1 July 2026 using Healthdirect’s vegetarian and vegan diets guidance, Vegan Australia’s Vegan FAQ, and Eat For Health’s Australian dietary guidelines information.
