Answer:
Heart disease remains the number 1 killer; diabetes and dementia enter the top 10. Heart disease has remained the leading cause of death at the global level for the last 20 years.
Explanation:
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.