The burden of world health has steadily increased of over the years following the emergence of new diseases and resurgence of previously defeated foes as in Zika and Ebola, to mention a few.This is not to say significant achievements have not been made in the field of medicine following coordinated research programmes, rejuvinated community health activities and various health related programmes vis a vis communicable and non-communicable diseases.

In spite of all these,the burden is still great.Here is a list of top killer diseases in the world


1. Coronary Artery Disease (Ischemic Heart Disease)

The deadliest disease in the world is coronary artery disease (CAD). CAD, also called ischemic heart disease, occurs when the blood vessels that supply blood to the heart become narrowed. The World Health Organization (WHO) estimates that about 7.4 million people died of ischemic heart disease in 2012. That was about 13.2 percent of all deaths.

Among the risk factors are high blood pressure, high cholesterol, and smoking. Regular exercise, good nutrition, and weight control can help lower your risk of developing CAD.

2. Stroke

A stroke is when an artery in the brain is blocked or leaks. Oxygen-deprived brain cells begin to die within minutes.

Stroke was responsible for 6.7 million deaths around the world in 2012, according to WHO. That figure represents about 11.9 percent of all deaths. CDC figures show that nearly 130,000 people in the United States die of stroke each year — that’s one person every four minutes. About one in four strokes occur in people who have had a prior stroke. Stroke is also a leading cause of disability.

Risk factors for stroke are similar to those for CAD

3. Chronic Obstructive Pulmonary Disease (COPD)

COPD is a chronic, progressive lung disease that makes it hard to breathe. Chronic bronchitis and emphysema are types of COPD.

About 3.1 million deaths were attributed to COPD in 2012, according to WHO. That represents about 5.6 percent of deaths, a rate that has held steady since 2000. In 2004, about 64 million people around the world were living with COPD.

The main cause of COPD is tobacco — and that means secondhand smoke, too.


4. Lower Respiratory Infections

WHO estimates that lower respiratory infections caused about 3.1 million, or 5.5 percent of deaths in 2012. This group of diseases includes pneumonia, bronchitis, and influenza.

5. Trachea, Bronchus, and Lung Cancers

Trachea, bronchus, and lung cancer are all respiratory cancers. The main causes of this type of cancer are smoking, second-hand smoke, and environmental toxins.

WHO estimates that in 2012, 1.6 million people died from trachea, bronchus, and lung cancers. These cancers represent about 2.9 percent of all deaths globally.



6. HIV/AIDS

According to the Foundation for AIDS Research (amfAR), since the start of the pandemic, almost 39 million people have died due to HIV/AIDS. In 2013, about 1.5 million people lost their lives to AIDS. That’s about 2.7 percent of deaths worldwide.

By the end of 2012, 35.3 million people around the world were infected with HIV. Every day, about 5,700 more become infected.









More:https://afonjaman.com/2017/06/26/top-ten-deadliest-diseases/

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