To your question one word answer here is, NO. The IVF process itself does not lead to twins or multiple births directly, though if we study statistically, the rate of multiple births in IVF is much more then for the women who conceive naturally. The main reason can be the practice of transferring more than one embryo at a time in an IVF cycle it can be avoided by precise practice of conducting IVF cycle, and most of the leading fertility experts now consider elective single blastocyst stage embryo transfers to be the best practice.