The deadliest disease in the world is coronary artery disease (CAD). Also called ischemic heart disease, CAD occurs when the blood vessels that supply blood to the heart become narrowed. Untreated CAD can lead to chest pain, heart failure, and arrhythmias.
Although it’s still the leading cause of death, mortality rates have declined in many European countries and in the United States. This may be due to better public health education, access to healthcare, and forms of prevention. However, in many developing nations, mortality rates of CAD are on the rise. An increasing life span, socioeconomic changes, and lifestyle risk factors play a role in this rise
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