What's a Mom to do?  My husband loves meat and our younger daughter has become a vegetarian.  She first asked when she was about four years old.  Then, I said no.  Age four is too young to make a decision that significantly affects health.  I felt comfortable saying no, then.  But when she turned 12, she asked again. And this time I said yes.  Since then, we've struggled a bit with each accepting the other's choice, and she has struggled with some health issues.