My youngest son was 22 when he died suddenly. He was perfectly healthy in every way,,planning his wedding. There were no warnings at all that something was wrong. I had taken ill several years before with my own heart ailment. We have since traced back sudden death heart problems for generations and are part of a gene study with the Oregon Health and Science Institute. My older son has echos done every 2 years but the doctors say that is not much reassurance as this can happen so suddenly. It deserves much more research.