Your Health

Our immune systems constantly fight off disease — protecting us from colds, flu and infection. An experimental treatment called immunotherapy is helping patients' immune systems fight off cancer.

The way a pediatrician talks with nervous parents about vaccines may determine whether the child gets immunized or not, a study suggests. Asking "What do you want to do about shots?" doesn't work.

Once you become the boss, it's likely that you'll start to speak quite differently. The pitch, resonance and intensity of your speech change in ways that listeners can detect as signs of power.

Iggy Ignatius bet that immigrants from India would long to live with other Indians in his Florida condos. He was right. Psychologists say intimations of mortality make us want to be with our own kind.

There is no effective treatment for the rare genetic disorder fragile X syndrome, so two parents created a foundation to fund research. But they found there's no easy road to a cure.

Food and Drug Administration Commissioner Margaret Hamburg says she'll leave the job at the end of March after six years in the spotlight and controversies over Plan B emergency contraception.

The pressure, doctors say, is mostly coming from other parents who don't want their infants exposed to measles, whooping cough or other serious illnesses in the pediatric waiting room.

Humans have lighter bones than other primates, and that change happened a lot later than anthropologists had thought. Blame our sedentary ways after our ancestors took up farming.