Coronary Heart Disease may be initially caused by high blood pressure or aging. If it is high blood pressure, blood starts to pump around the body with more turbulence, causing the arteries to become damaged. With aging, the arteries could have worn out and the inner surface damaged due to long usage. This damage makes the smooth glistening membranes that line the arteries to become roughened. Fatty deposits get caught on the roughened membrane and build up causing the walls of the artery to become hardened and thickened Atherosclerosis. As the Atheromatous plaques build up more and more, the...
increase in women after they reach menopause because their bodies will no longer produce oestrogen. Age is also a factor that lifestyle cannot change. The older a person becomes, the more their arteries are used so the more likely they are to wear out, causing problems. There is no proven way to prevent this from happening.

Most of the factors lead to Hypertension which then leads to Coronary Heart Disease, so if people start to manage their blood pressure and keep it Normal, I predict that they would be much less likely to develop Coronary Heart Disease.