Being born too soon can set a child back for a lifetime. Jennifer Coate/AP hide caption

A man who breaks a wrist after age 50 is more likely to die prematurely than a woman with the same injury. iStockphoto hide caption

The symptom card tells what to watch for, and the log sheets are for recording temps and symptoms, twice a day. CDC hide caption

If you think this looks like something fun to play with, you could get yourself into trouble. iStockphoto hide caption

Sofia Jarvis, seen here with her family at a press conference in February, is one of several dozen children in California who have been diagnosed with a rare paralytic syndrome. It has left her left arm paralyzed. Martha Mendoza/AP hide caption

Psychologists say spanking and other forms of corporal punishment don't get children to change their behavior for the better. Science Photo Library/Corbis hide caption

If a child feels like the odd person out, it could mean more problems in the teenage years, psychologists say. iStockphoto hide caption

The physical therapist will advise, but you're going to have to do the work. iStockphoto hide caption

Drat those viruses. They're the culprit in the majority of children's colds and sore throats. iStockphoto hide caption

PCR tests like this can tell if a virus is an enterovirus, but they can't ID the new virus that has caused a surge in serious respiratory infections. BSIP / Science Source hide caption

Does smoking pot make it less likely that you'll go to college? iStockphoto hide caption