How can a former Ironman triathlete get heart disease? For Rick Del Sontro and most of his family, there's no escape. It's a genetic defect that has plagued generation after generation. Subscribe on YouTube: bit.ly/U8Ys7n NYT on Google Plus: bit.ly/WnAshF Watch more videos at: nytimes.com/video Follow on Twitter: twitter.com/nytvideo