Report says it's possible fetus' sex may impact pregnant woman's immunity

One of the first thoughts parents-to-be have is, is it a boy or a girl?

Most women find out the sex of their baby around 16 to 20 weeks into the pregnancy, if she wants to know. But according to a new study, something else might spoil the surprise.

For years, women have said their bodies react differently when they are pregnant with a boy or a girl. For instance, some say their morning sickness is different and their cravings.

But is that true?

The latest Journal of Brain, Behavior and Immunity says it’s possible that the sex of a baby is associated with how pregnant women respond to different viruses, infections and chronic conditions.

Women carrying female fetuses experienced exacerbated symptoms of some medical conditions when carrying a female versus a male fetus.