The condition known as hypertrophic cardiomyopathy, or HCM, is inherited and can be a killer. But some of the genetic mutations once thought linked to the illness are actually harmless, geneticists say.
Afton Almaraz/Getty Images
Researchers are recruiting volunteers to participate in a four-year study trial of cocoa extract. Half of the participants will take capsules containing about as much cocoa extract as you'd get from eating about 1,000 calories of dark chocolate.
Dennis Gottlieb/Getty Images