The National Institutes of Health April 7 released a study that found twins — smaller at birth on average than singletons — ...

The ultrasound study revealed that twins have less fat tissue and less muscle mass than singletons beginning at 15 weeks of pregnancy. If results are confirmed by additional research, the findings ...

Police investigating the shooting death of a pregnant 26-year-old Texas woman said she was found slumped over in the front passenger seat of a car, with a sonogram photograph of her unborn twins ...

Twins—smaller at birth, on average, than singletons—start out smaller in pregnancy than was previously known, according to a study by researchers at the National Institutes of Health (NIH). The ...

The ultrasound study revealed that twins have less fat tissue and less muscle mass than singletons beginning at 15 weeks of pregnancy. If results are confirmed by additional research, the findings ...