Is it true that having sex can make a full-term pregnant mom go into labor?

The BabyCenter Editorial Team

No – but this is a powerful myth.

Over the years, some pregnant women, midwives, and doctors have suggested that having sex near the end of pregnancy might help bring about the onset of labor. One theory was that the hormones present in semen (prostaglandins) and the contractions of orgasm would stimulate the cervix. But studies have shown no such link.