Researchers believe the disease might dampen immune system, leaving people more vulnerable

But children who didn't have a younger sibling by first grade much more likely to be obese

Things you can do at home

What to do if you have symptoms

Risk was almost tripled when mothers smoked heavily, but study didn't prove cause and effect

Researchers say high-risk gene variants that are more common in blacks don't explain the disparity

State had a 14-fold rise in such deaths since 1979, mirroring nationwide trend

The resulting stress is tied to health problems, researchers add

Herbicide was used during Vietnam War, and vets with Parkinson's-like symptoms can file claim for the condition

Drugs come with many side effects, may add only one month to survival, researchers add