The way in which diseases are diagnosed can change, as was recently the case with autism. And these new changes in diagnostic criteria could change how many children are diagnosed with autism.

Many people have insomnia symptoms from time to time, but who's at risk for persistent insomnia? That's a question researchers recently set out to answer.

The hazards of secondhand smoke to children are already clear in medical research, but such exposure is especially a problem for children with asthma or wheezing.

Fifty years ago, the US Surgeon General first warned of the dangerous effects of smoking. On the anniversary of that announcement, the current Surgeon General has released new data.

Many mothers experience symptoms of depression after giving birth. A new review showed that the severity and length of postpartum depression varied widely between women.

The risks of smoking are well established, but that doesn't mean it's easier to quit the habit. Yet, more Americans are skipping the smokes these days.

For some injuries, recovery may be a lifelong process that includes risks along the way. Traumatic brain injury may be such a condition.

Too much alcohol can cloud your memory of an evening, but could it also cloud your memory later in life? A new study suggested it might.

It’s all fun and games until someone gets hurt. And in your teens’ case, that concussion could lead to depression.

Some newborns have breathing problems after birth, and according to a recent study, antidepressants taken during pregnancy may have a small role in these breathing problems.