Good morning and welcome to HCM,
Yes, Vegans are notoriously are at high risk for deficiencies in the following nutrients:
saturated fat and
cholesterol, long-chain n–3 (
omega-3) fatty acids, vitamin D, calcium, zinc, and vitamin B-12. Sulfur in the diet also tends to be low.
A doctor can test for several of these areas.
Have you considered a vegan multivitamin? There are also supplements of omega-3 fatty acids that are made from algae. B12 is critical for neurological development. I would have the child tested and possible need for injections.
I suspect that the child is deficient in D if not drinking fortified milk, but there are A and D drops available. What about calcium and vitamin D almond milk?
The child needs to be assessed by a
pediatrician and a pediatric dietitian, have the proper labs ordered and supplementation started as needed.
Good luck! Regards, Kathryn Shattler, MS,RDN