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Life-stage nutrition

Vegan Diets in Pregnancy, Infancy and Childhood

How needs change during pregnancy and growth, why professional planning matters and which nutrients deserve particular attention.

By Dr Hana Lindqvist11 min readPublished 2026-10-02Updated 2026-10-02
A family preparing a varied plant-based meal together

Suitable does not mean automatic

A well-planned vegan diet can support pregnancy and childhood, but growth and brain development reduce the margin for error. Advice for healthy adults is not enough for an infant.

Pregnancy and breastfeeding

Folate guidance applies before conception and in early pregnancy. Vitamin B12, iodine, vitamin D, iron, calcium, protein and omega-3 deserve review with a midwife, doctor or registered dietitian. Never use high-dose iodine without advice.

Babies and young children

Breast milk or suitable infant formula remains central in infancy. Plant drinks are not substitutes for breast milk or infant formula. Young children need energy-dense meals, frequent eating and age-safe forms of nuts, seeds, pulses and tofu.

Get individual help

Prematurity, faltering growth, allergies, restricted variety, gastrointestinal disease and feeding difficulty all need personalised clinical support. The NHS Eatwell Guide is not designed for children under two.

Pet feeding setup with measured main diet, treats and fresh water
Measure the complete diet, keep treats limited and provide fresh water. Exact amounts depend on the individual animal.

Frequently asked questions

Can oat or almond drink replace infant formula?
No. Ordinary plant drinks do not meet an infant's nutritional needs and must not replace breast milk or suitable infant formula.

References

  1. Maternal and child nutrition — NICE NG247
  2. The vegan diet — NHS
  3. Vegetarian and vegan diets — NHS Inform