genetic testing

A variety of genetic tests are available to screen both fetus and parents. One option that's growing in popularity is called an expanded carrier screening. The results can be useful and overwhelming.

Only about half the people with Alzheimer's symptoms get a diagnosis, partly out of fear of an incurable decline, doctors suspect. But Jose Bolardo says facing the future allows him to plan for it.

As home genetic testing continues to boom, more people are getting their DNA tested for health reasons. The tests may signal future disease, but there are many limitations that might falsely reassure.

Popular DNA ancestry tests don't always find what people expect. That's due to how DNA rearranges itself when egg meets sperm, and also the quirks of genetic databases.

There's a genetic test for ALD, the inherited disorder portrayed in the movie Lorenzo's Oil, and the federal government recommends it for all newborns. But only a handful of states offer it routinely.