What factors in in vitro fertilization (IVF) contribute to the higher likelihood of twin pregnancies, and how do the procedures or treatments influence the chances of conceiving twins compared to natural conception?
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What factors in in vitro fertilization (IVF) contribute to the higher likelihood of twin pregnancies, and how do the procedures or treatments influence the chances of conceiving twins compared to natural conception?
1. IVF often involves transferring multiple embryos to increase pregnancy chances, which significantly raises the likelihood of twins compared to natural conception.
2. In IVF, multiple embryos are usually implanted to enhance success rates, unlike natural conception where typically only one egg is fertilized.
3. The use of fertility drugs in IVF stimulates the ovaries to produce multiple eggs, increasing the chances of multiple embryos implanting and developing into twins.
4. Enhanced ovarian stimulation in IVF leads to multiple ready eggs. When more than one is fertilized and transferred, twin pregnancies become more likely.