While the media bombards us with alarming statistics about the number of teenagers having sex, few reports shed light on what might encourage teens to become sexually active in the first place. Three studies offer some insight into sexually active teens: environment, age of partner and perceived family support may affect young people's decisions to have sex. Join discussion...

An older woman’s slim chances of becoming pregnant could be made worse if embryos are screened for defects before being implanted into the womb, a study has found. Pregnancy and rates of live birth were lower among women whose embryos had been screened than among those whose embryos had not, according to the study, presented here Wednesday at a meeting of the European Society of Human Reproduction and Embryology. Join discussion...