Final answer:
Using reproductive technologies to increase the chances of having a baby can increase the chances of having twins. Multiple pregnancies carry a higher risk of complications and developmental problems.
Step-by-step explanation:
One side effect of using reproductive technologies to increase the chances of having a baby is that it increases the chances of having twins. Hormonal treatments that stimulate ovulation often result in more than one egg being ovulated at a time, which can lead to multiple births. Multiple fetuses are at greater risk of being born prematurely or having health and developmental problems. Therefore, the possibility of multiple fetuses should be considered before undergoing this type of infertility treatment.