Coronary Heart Disease is restriction of blood flow to the heart due to a buildup of fatty deposits in the arteries around it. This can be caused by lifestyle factors such as smoking, an unhealthy diet, or regular alcohol consumption.
https://www.bhf.org.uk/informationsupport/conditions/coronary-heart-disease
You can reduce your risk of coronary heart disease by maintaining a healthy weight, eating a healthy diet, quitting smoking, exercising, reducing alcohol consumption and taking your prescribed medications, along with keeping blood pressure and diabetes under control.
https://www.nhs.uk/conditions/coronary-heart-disease/prevention/