Newsweek spoke to some experts about whether the weight loss drug could have an impact on birth rates in America.

News about Multiple Births, including commentary and archival articles published in The New York Times.

Globally, mothers are having fewer children. Yet despite this latest observed decline in birth rates, the number of twins and triplets being born today is higher than ever before.

Multiple births can also happen as a result of “hyper-ovulation” – when more than one egg is released in the same cycle.

As multiple birth pregnancies can cost nearly 20 times more than singleton pregnancies, strategies to minimize multiple embryo transfer should be considered, researchers argue.

Sixty percent of multiple-birth infants weigh less than 5 1/2 pounds each, and the upswing in multiple deliveries has had enormous effect on neonatal intensive care units.

Most of the decline in multiple births is because doctors have begun limiting the number of embryos transferred during in vitro fertilization to as few as possible -- ideally, just one.

More U.S. women are having twins, triplets, quadruplets and even quintuplets, and it's not just because some are using fertility treatments, new research shows.

The number of congenital anomalies, or birth defects arising from multiple births has almost doubled since the 1980s, suggests a new study.

Robin Scholz/The Associated PressJenny Ferrill, here with husband Pete and their 2-year-old quintuplets, has advice for Nadya Suleman. Nadya Suleman's daunting future of raising octuplets into ...

A major medical group has issued new guidelines aimed at limiting the number of multiple pregnancies that result from in-vitro fertilization. The American Society for Reproductive Medicine ...