Many studies at home and abroad show the family plays an important role in the incidence of coronary heart disease. If one of your parents get the CAD, you are at double risk compared with others. Since both of your parents are suffering from the CAD, you have 4 times risk of getting it than others.
However, except for the genetic influence, I think you should reconsider the lifestyle and living environment in your family. A healthy lifestyle is much stronger than the gene impart.
Keywords: coronary artery disease hereditary; coronary heart disease hereditary.