Top 5 Diseases with the Highest Mortality Rates in the World
According to the World Health Organization (WHO), there are countless diseases that cause a significant number of deaths worldwide every year. However, some of these diseases are more deadly than others. In this article, we will discuss the top 5 diseases with the highest mortality rates in the world, based on WHO statistics.
1. Ischaemic Heart Disease
Ischaemic Heart Disease (IHD) is the leading cause of death in the world, accounting for nearly 16% of all deaths. It occurs when the coronary arteries, which supply blood to the heart, become narrowed or blocked, due to a buildup of cholesterol and other fatty substances in the arteries. This can cause chest pain, shortness of breath, and ultimately a heart attack. IHD is primarily caused by unhealthy diet, lack of physical activity, smoking, and genetics.
Stroke is the second leading cause of death globally, accounting for nearly 11% of all deaths worldwide. It happens when blood flow to the brain is interrupted or reduced, leading to brain damage and even death. The most common types of stroke are ischemic stroke, which is caused by a blood clot blocking an artery in the brain, and hemorrhagic stroke, which is caused by bleeding in the brain. Stroke is primarily caused by high blood pressure, high cholesterol, smoking, diabetes, and an unhealthy lifestyle.
3. Chronic Obstructive Pulmonary Disease (COPD)
COPD is the third leading cause of death in the world, accounting for nearly 6% of all deaths worldwide. It refers to a group of lung diseases that cause breathing difficulties, such as chronic bronchitis and emphysema. COPD is primarily caused by smoking, air pollution, and exposure to harmful chemicals and fumes. It usually develops over time, and the symptoms tend to get worse as the disease progresses.
4. Lower Respiratory Infections
Lower Respiratory Infections (LRI) are the fourth leading cause of death globally, accounting for nearly 5% of all deaths worldwide. This includes pneumonia, bronchitis, and other infections that affect the lungs. LRIs are caused by bacteria, viruses, and other microorganisms, and they can range from mild to severe. Children and the elderly are more vulnerable to LRIs, especially in low-income countries with poor sanitation and healthcare infrastructure.
5. Alzheimer’s Disease and Dementia
Alzheimer’s Disease and Dementia are the fifth leading cause of death in the world, accounting for nearly 3% of all deaths worldwide. While Alzheimer’s Disease is the most common cause of dementia, there are several other types of dementia that can also be fatal. They are progressive brain disorders that cause memory loss, cognitive decline, and behavioral changes. There is currently no cure for Alzheimer’s Disease and Dementia, and the exact cause of these conditions is still unknown.
In conclusion, Ischaemic Heart Disease, Stroke, Chronic Obstructive Pulmonary Disease, Lower Respiratory Infections, and Alzheimer’s Disease and Dementia are the top 5 diseases with the highest mortality rates in the world. While some of these diseases can be prevented or managed through healthy lifestyle choices and proper medical care, others still lack effective treatments or cures. Therefore, it is crucial to raise awareness of these diseases and invest in research and healthcare services that can help reduce their impact on global health.