Scientists have discovered how a woman’s brain changes when she has a second child

Having a baby changes so many things – including your brain (Picture: Getty Images)It’s estimated that around 210million pregnancies occur worldwide each year.And it’s no secret that the experience of carrying a child and giving birth has a massive impact on a woman’s body – changing everything from hormone levels and breast size to hair texture and teeth.But until recently, there’s been one aspect of pregnancy that’s remained somewhat unclear – a