Heart failure missing link discovered? (UK)

British scientists say diseased hearts have DNA "marks" not found on healthy hearts. Lead author Dr. Roger Foo of the University of Cambridge in England said the marks - known as DNA methylation - are crucial in normal development allowing different cells to become different tissues despite having the same genes. The cells continue to occur throughout life in response to environmental changes. "DNA methylation leaves 'marks' on the genome, and there is already good evidence that these marks are strongly influenced by environment and diet," Foo said in a statement. "Linking all these things together suggests this may be the 'missing link' between environmental factors and heart failure." - UPI