Discuss the reasons why ART leads to more multiple and premature births than the general population. What will be an ideal response?
ANSWER: Each year, about 1.5% of babies born in the United States are conceived through IVF. In
about 40% of all cases, three or more embryos are transferred, and about 20% of all
pregnancies from IVF involve multiple births. These births generate health costs of $1 billion
because twins and higher multiples are at a threefold higher risk of premature birth. About
42% of IVF births are premature, compared to about 13% of births in the general population.
To avoid problems associated with multiple births, recent guidelines recommend that only
one embryo should be transferred after IVF.
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