Mind meets matter: stress, schizophrenia, immunity and heart disease

Are we really more vulnerable to colds when we're stressed? Does depression increase your risk of heart disease? Could a bad bout of the flu during pregnancy cause schizophrenia in your child? Science has long struggled with the question of whether states of mind influence the body, and vice versa. But the historic mind-body divide is being challenged as cardiologists, immunologists and neuroscientists meet across the lab bench.