Men who are infertile because of defective semen are at the increased risk of dying sooner than men with normal semen, according to a new study.
Researchers found that even though people support adoption, only a minority of infertile women actually consider it.
Researchers were able to collect viable eggs from five infertile women and help trigger egg growth. One of the five women has since given birth to a healthy baby.
Researchers report that menopause developed because men became more and more interested in finding younger, more attractive mates.