Do You Really Want to Know? is a 2012 documentary film directed by John Zaritsky and produced by Kevin Eastwood. Using interviews and dramatic recreations, the film recounts the stories of three families who carry the gene for Huntington's disease, a neurodegenerative illness which is the result of a genetic abnormality, whose symptoms typically appear in mid-life. Members of each featured family have undergone predictive testing to learn whether or not they have inherited the gene that causes the disease, and they each describe the impact that testing has had upon their lives. Do You Really Want to Know? had its world premiere in Canada at the 2012 DOXA Documentary Film Festival and its broadcast premiere on November 13, 2012 on Knowledge Network.