The cost of not eating meat: According to WHO there are 10.8 million child deaths globally a year. The number attributed to zinc, vitamin A, and iron deficiencies is 2 082 000, or 19% of the total. Malaria, for comparison, causes less than one million child deaths a year. It also causes 2.7% of global DALYs, compared t...o the roughly 6% caused by iron, vitamin A and zinc deficiencies.

http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0042-96862003000200002