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"Children and pregnant women can't be vegan."
the world's largest association of nutrition professionals, the US Academy of Nutrition and Dietetics, considers well-planned vegan diets adequate at all stages of life, including pregnancy, lactation and childhood. Other bodies are more cautious: in 2024, the German Nutrition Society neither recommended nor advised against it for these groups, for lack of data. Across all positions, the common ground is careful planning and professional supervision, not a need for meat.
Short answer
The US Academy of Nutrition and Dietetics considers well-planned vegan diets adequate at all stages of life, including pregnancy and childhood. Other bodies, such as the German Nutrition Society, are more cautious and call for nutritional knowledge and professional supervision. The common ground is planning: B12, iodine, vitamin D, iron, omega-3 and enough energy. The serious cases reported in the news involve poorly planned restrictive diets, not well-supervised vegan diets.
For children
Children need lots of nutrients to grow. A vegan child can grow up strong and healthy if the family plans meals well and visits the doctor or dietitian regularly, taking the vitamins they recommend. The important thing is to eat well, with lots of different foods.
"Is a vegan diet planned with a dietitian the same as a poorly planned diet?"
Como pode aparecer
"That's child abuse."
"The baby won't develop."
"Pregnant women need meat."
"Vegan parents should lose custody."
"There isn't enough evidence to recommend vegan diets in childhood."
"Milk is necessary for your bones." (which is G5)
The strongest version
"That's child abuse. The baby won't develop. Pregnant women need meat."
Strongest version (steelman):
- P1Pregnant women, babies and children have greater and more delicate nutritional needs.
- P2Dietary mistakes at these stages can cause serious and sometimes irreversible harm.
- P3Vegan diets require planning and supplementation, and data on them in these groups is limited.
- CSo children and pregnant women shouldn't follow vegan diets.
P1, P2 and P3 are true. The problem lies in the conclusion: what the premises justify is extra care and supervision, not prohibition.
The argument is valid as a warning. It fails as proof that the diet is impossible or dangerous in itself.
Full answer
- a
Reconstruction and diagnosis
The main bodies don't all say the same thing, but they all converge on one point:
Body Position Common ground Academy of Nutrition and Dietetics (US), 2016 Adequate at all stages of life, if well planned Planning German Nutrition Society, 2024 No recommendation for or against for pregnant women and children, for lack of data; calls for knowledge and supervision Planning and supervision Federal Council of Nutritionists (Brazil), 2022 Possible at all life stages, if well planned; cites Brazil's dietary guidelines for children under 2, which accept a vegetarian diet in infancy with extra care Planning None says meat is necessary; the disagreement is about the degree of caution.
- b
Where the argument breaks
1. The most cited nutrition body considers it adequate.
The Academy of Nutrition and Dietetics states that well-planned vegan diets are appropriate for pregnancy, lactation, infancy, childhood and adolescence.
2. The cautious positions ask for care, not meat.
In 2024, the German Nutrition Society moved from "not recommended" to "no recommendation for or against" for these groups, and stresses that mistakes can have serious consequences, which requires knowledge and supervision.
3. Serious cases involve poorly planned diets.
Reported cases of child malnutrition usually involve extremely restrictive diets, lack of B12 or energy, and no supervision. The same kind of neglect causes malnutrition on any diet.
4. The critical nutrients are known.
B12, iodine, vitamin D, iron, zinc, calcium, omega-3 and enough energy. With supplementation and supervision, they can be secured.
5. Diets with meat can also be inadequate.
Childhood obesity and anemia are common problems among children who eat meat.
- c
Data and sources
Source What it says Note Academy of Nutrition and Dietetics, 2016 Well-planned vegan diets are adequate at all stages of life, including pregnancy, lactation, infancy, childhood and adolescence Official position Brazil's Federal Council of Nutritionists, technical opinion, 2022 (in Portuguese) A strict vegetarian diet can meet needs at all life stages, if well planned A Brazilian position German Nutrition Society (DGE), 2024 update For pregnant and breastfeeding women and children, no recommendation for or against for lack of data; requires nutritional knowledge and supervision The more cautious position, softer than in 2016 - d
The strongest counter-reply: when in doubt, don't take risks with children
The most serious version says that, given uncertainty and the risk of irreversible harm, the precautionary principle says not to take risks with children, who can't choose.
- e
Why the counter-reply doesn't reach the conclusion
Precaution calls for supervision, not meat.
The way to reduce the risk is to plan and monitor.
Diets with meat carry risks too.
Precaution would apply to them as well.
Children don't choose any diet.
Parents always decide; what matters is deciding responsibly.
- f
Back to the moral question
This is the argument where caution is most justified, because it involves those who can't choose. But what it asks for is responsible feeding, not the death of animals. If a well-supervised vegan diet can nourish a child, the moral question still stands.
Reasoning errors
Logical
Is the form valid?
Unwarranted generalization
Epistemological
Does the evidence support it?
Extreme cases as the rule
Moral
Is the criterion coherent?
Invented necessity
Biases
Availability bias
Reported cases of neglect seem representative
General literature on heuristics
Extrapolations
The principle being tested is: "if a diet requires planning at a sensitive stage, it shouldn't be followed".
If it applied to…Children allergic to milkTap to see
They couldn't follow milk-free diets
They do, with supervision
If it applied to…Children with celiac diseaseTap to see
They couldn't follow gluten-free diets
They do, with supervision
If it applied to…Pregnant women in generalTap to see
They shouldn't follow diets requiring extra folic acid and iron
Every pregnancy does
Contradictions
Which also cause harm.
Such as those of children with food allergies.
But ignores their positions here.
What the argument gets right
What is true
This argument deserves more respect than many others. Pregnant women and children are vulnerable, mistakes can be serious, and there are serious bodies calling for caution for lack of data. Animal advocates shouldn't play this down.
But
But caution isn't prohibition. What all these bodies ask for is planning, knowledge and professional supervision, and with that a vegan diet can also nourish those just starting out in life.
Connections
Usually comes before
Usually comes after
Go deeper in Questão de Ética
Chapters from the open-access collection A Journey Through Animal Ethics that discuss this argument in more detail:
- Is It Necessary to Consume Animal Products? Vol. IV, ch. 9