The purpose of this quick guide is to answer the single most common question I hear from people who have recently received a DNA test result that does not match expectations.

You order a $99 home DNA test for some holiday pleasure. It’s a bit of fun. Right? Until it turns your life upside down.

There are four other types of sibling relationships with variations of DNA sharing.

In this piece which covers the topic of support after unexpected DNA discoveries, I shared my thoughts on the topic and touched briefly on the role grief and support play in these experiences.

You and thousands of people may find yourselves unwrapping a package of shiny paper and inside of it, a DNA kit! Maybe you were hoping for one and asking for it, maybe it is a surprise that came out of left field. Regardless, think of these things first!

What Happens to DNA When Someone Has a Stem Cell Transplant?

Tracing individuals based on their relatives DNA and family trees are only part of what GEDmatch allows DNA researchers to do. Other tools are available on GEDmatch, including one called "Are Your Parents Related?"

Panic doesn’t have to be part of the equation if you find out you have an elevated risk of developing alzheimer’s disease.

We don't know and understand all the factors that cause Alzheimer's yet, so while genetic testing can be helpful, it oftentimes won't be able to tell the whole story.

Anna Childers is a genetic counselor who interviewed adult adoptees on their perspectives on DNA testing.

How do you know if a DNA company you found online is reputable? And whether its results are reliable?

With the growth of tests like those from Ancestry and 23andMe, questions naturally arise. These tests promise to connect people to unknown genetic relatives, reveal ethnic background, and possibly uncover latent health factors.

Are you giving a DNA test as a gift this holiday season? Here are some things to consider before making this decision.

What is Raw data?