In the case of coronary heart disease and consuming mutton, it is generally acceptable to eat it, but we should decide based on our own health condition. For instance, if someone with coronary heart disease exhibits symptoms of qi deficiency or yang deficiency, such as fear of cold, or having cold hands and feet, they are more suited to eat mutton. Sometimes, doctors even recommend eating some mutton in winter. However, those with yin deficiency and internal heat, who are irritable and prone to anger, are advised to eat less. It's not that they absolutely cannot eat it, but it is best to avoid or minimize consumption. Generally speaking, a light diet is recommended for those with coronary heart disease.