Rickets in children due to a lack of vitamin D

Iron-Deficiency Anemia due to low iron storage. One study found that 27% of women and 5% of men who were lacto-ovo-vegetarians had low serum ferritin levels (iron storage)

Macrocytic Anemia due to vitamin B-12 deficiency. This has been observed in infants breast-fed by mothers who are strict vegetarians

Emaciation or Slow Growth in vegetarian infants and children

If you’re only looking for one more- I would say it’s probably anemia.

Balancing vegetarian food and nutrition is vital to maintaining a healthy vegetarian diet. Strict vegetarians may be at risk of several nutrition deficiencies such as vitamin B-12, riboflavin, zinc, calcium, iron, and essential amino acids such as lysine and methionine. Vegans and vegetarians are also at risk of energy deficiency in the form of calories, particularly in children.

Long-term deficiencies in an inadequate vegetarian diet may lead to the following complications:

* Osteoporosis as a result of a lack of calcium causing bone demineralization

* Rickets in children due to a lack of vitamin D

* Iron-Deficiency Anemia due to low iron storage. One study found that 27% of women and 5% of men who were lacto-ovo-vegetarians had low serum ferritin levels (iron storage)

* Macrocytic Anemia due to vitamin B-12 deficiency. This has been observed in infants breast-fed by mothers who are strict vegetarians

* Emaciation or Slow Growth in vegetarian infants and children

Another issue facing vegetarians is low protein quality based on protein digestibility and amino acid composition. The risk associated with the protein quality of plant foods is based on a lack of certain essential amino acids that are found in natural combinations in animal protein. Combining different vegetarian nutrition sources of protein can ensure that all essential amino acids are found in a healthy vegetarian diet.