Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Twins, Triplets, Multiple Births ?
    ### Response:
    If you are pregnant with more than one baby, you are far from alone. Multiple births are up in the United States. More women are having babies after age 30 and more are taking fertility drugs. Both boost the chance of carrying more than one baby. A family history of twins also makes multiples more likely.
    