At what age should women stop having babies before health issues for mother and child?

i am 37 and i would like to know at what age should women stop having children. before health issues start rising for mother and child. at what age is safe to conceive a child? am i to old for my last attempt to conceive?|||I believe sometime around 40, kids tend to have a lot of problems (retardation, downs syndrome, etc.). Biologically, humans are designed to have kids when they are younger. Waiting to long is really bad.|||The age to be safe is 35. You can have a child, but the risk of it having a genetic deformity is slightly greater as you age.