I often wonder about whether I'll be healthy in the future. Would I actually want to know, though?
Researchers in Iceland took DNA from 10,000 people and combined the data with family trees. They were then able to predict the genetic make-up of the entire Icelandic nation. Genetic mutations known to cause deadly diseases could be identified in people who didn't volunteer their DNA for the study, raising ethical issues.
Knowledge is a powerful tool in the battle for our health, but also a rather scary one!