As plant-based diets grow in popularity, experts are weighing in on the potential benefits and pitfalls of raising children on a vegan diet. While a well-planned vegan lifestyle can offer long-term health advantages, poor implementation could leave children lacking key nutrients, with serious consequences for their growth and development.
Recent estimates suggest around 3% of the UK population now follow a vegan diet, including a growing number of families. But experts caution that when it comes to children, careful dietary planning is essential.
Federica Amati, a nutritional scientist at Imperial College London, says vegan diets are associated with lower cholesterol, reduced risk of heart disease, and healthier body weight. “People on vegan diets tend to have lower LDL cholesterol and reduced risk of cardiovascular issues,” she explained, citing fibre and antioxidant-rich foods like legumes and vegetables as key contributors.
However, several nutrients vital for child development—such as vitamin B12, omega-3 fatty acids, calcium, and iron—are either absent or harder to absorb in plant-based diets.
Vitamin B12, essential for nerve function and red blood cell production, is only found naturally in animal products. While supplements and fortified foods can meet this need, many vegans still fall short. “Children are particularly vulnerable,” Amati warns. “Missing out during key growth periods can impact cognitive development and learning.”
Omega-3 fatty acids EPA and DHA, critical for brain development, are typically sourced from fish. While alternatives like algae-based supplements exist, they are not always part of a standard vegan diet. Similarly, nutrients such as iron and zinc—found in leafy greens but absorbed less efficiently from plants—require strategic planning to meet recommended levels.
The consequences of deficiency can be severe. In one widely reported case, a baby in Belgium died in 2017 after being fed a diet of homemade plant-based milks. Less extreme, but still concerning, is a 2021 Polish study which found that vegan children had lower calcium levels, reduced bone density, and were 3–4cm shorter on average than their omnivorous peers.
Still, experts agree that with professional guidance and adequate supplementation, vegan diets can be safe for children. “It’s about doing it responsibly,” said dietician Malgorzata Desmond. She advises parents to consult with paediatric nutritionists and monitor growth regularly.
Tom Sanders, professor emeritus at King’s College London, echoes the view. “Kids can thrive on vegan diets,” he said, “but you need to avoid the pitfalls.”
Experts also urge families to avoid relying on processed vegan products. “If your vegan diet is built on plant-based nuggets and cheese, your child is not going to get what they need,” said Amati.
With more parents turning to plant-based diets, the message is clear: veganism can be compatible with a healthy childhood—but only if it’s done with care, planning, and professional input.
