Folic acid is important

I'm 25 and my child is 4.she was diagnosed with spina bifida when I was 5 weeks pregnant with her.the cause was I didn't have enough folic acid in my body.but at age 20 how are you supposed to know that.prenatals didn't have enough folic acid for me.that's how much my body lacked. So remember to take those folic acid pills ladies.better safe than sorry!