Vitamin B-12 deficiency slows brain development. A deficiency in
just one nutrient can halt the development of a baby's brain. The Centers
for Disease Control (CDC) recently reported two cases of severe B12
deficiency in toddlers who were breast-fed by vegan mothers.
The children cited in the CDC report were able to recover somewhat
from malnutrition after being hospitalized and fed a supplemented diet.
However, a year after treatment, both children had lingering