Scientists have discovered a strand of DNA that dramatically raises the risk of coronary heart disease and doubles the chances of younger people suffering a heart attack prematurely.
The high-risk stretch of genes is common among Caucasian populations, with up to a quarter carrying copies that boost the risk of heart disease by 40% and increase the lifetime risk of a heart attack by 60%. Early-onset heart attacks, occurring in men under 50 and women under 60, were found to be twice as likely among those who inherited the high-risk gene sequence from both their mother and father.
The strand of DNA, reported in the prestigious US journal Science today, is believed to be the most important genetic factor for heart disease yet found.
