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5 Most Deadliest Diseases in The World



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5 Most Deadliest Diseases in The World

When people think of the #DeadliestDiseases in the world, their minds probably jump to the fast-acting, incurable ones that grab headlines from time to time.

But in fact, many of these types of diseases don’t rank in the top 10 causes of worldwide deaths. An estimated 56.4 million people passed away worldwide in 2015, and 68 percent of them were due to diseases that progressed slowly.

Perhaps even more surprising is that several of the Deadliest Diseases are partially preventable. Non-preventable factors include where a person lives, access to preventive care, and quality of healthcare. These all factor into risk. But there are still steps everyone can take to lower their risk.
In 2019, the top 10 causes of death accounted for 55% of the 55.4 million deaths worldwide.

5 Leading Causes of Death Globally

At a global level, 7 of the 10 leading causes of deaths in 2019 were non-communicable diseases.

These seven causes accounted for 44% of all deaths or 80% of the top 10
However, all non-communicable diseases together accounted for 74% of deaths globally in 2019.

1. Ischemic heart disease, or coronary artery disease

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

The world’s biggest killer is ischemic #HeartDisease, responsible for 16% of the world’s total deaths. Since 2000, the largest increase in deaths has been for this disease, rising by more than 2 million to 8.9 million deaths in 2019.

2. Stroke

A stroke occurs when an artery in your brain is blocked or leaks. This causes the oxygen-deprived brain cells to begin dying within minutes.
During a stroke, you feel sudden numbness and confusion or have trouble walking and seeing. If left untreated, a stroke can cause long-term disability.

In fact, strokes are the leading cause of long-term disabilities. People who receive treatment within 3 hours of having a stroke are less likely to have disabilities.

The Centers for Disease Control and Prevention (CDC) reports that 93 percent of people knew sudden numbness on one side was a stroke symptom. But only 38 percent knew all the symptoms that would prompt them to seek emergency care.

3. Lower respiratory infections

A lower respiratory infection is an infection in your airways and lungs. It can be due to:
- Influenza, or the flu
- Pneumonia
- Bronchitis
- Tuberculosis
Viruses usually cause lower respiratory infections. They can also be caused by bacteria.

Coughing is the main symptom of a lower respiratory infection. You may also feel breathlessness, wheezing, and a tight feeling in your chest.
Untreated lower respiratory infections can lead to breathing failure and death.

Lower respiratory infections remained the world’s most #DeadlyCommunicableDisease, ranked as the 4th leading cause of death.
However, the number of deaths has gone down substantially: in 2019 it claimed 2.6 million lives, 460,000 fewer than in 2000.

4. Chronic obstructive pulmonary disease

Chronic obstructive pulmonary disease (COPD) is a long-term, progressive lung disease that makes breathing difficult. Chronic bronchitis and emphysema are types of COPD. In 2004, about 64 million people around the world we're living with COPD.

There’s no cure for COPD, but its progression can be slowed with medication. The best ways to prevent COPD are to stop smoking and to avoid secondhand smoke and other lung irritants.

5. Trachea, bronchus, and lung cancers

Respiratory cancers include cancers of the trachea, larynx, bronchus, and lungs. The main causes are smoking, secondhand smoke, and environmental toxins. A 2015 study reports that respiratory cancer accounts for about 4 million deaths annually.

In developing countries, researchers project an 81 to 100 percent increase in respiratory cancers due to pollution and smoking. Many Asian countries, especially India, still use coal for cooking. Solid fuel emissions account for 17 percent of lung cancer deaths in men and 22 percent in women.

While deaths from some #Diseases have increased, those from more serious conditions have also decreased. Some factors, such as an increasing life span, naturally increase the incidence of diseases such as CAD, stroke, and heart disease.

But many of these deadliest diseases on this list are preventable and treatable. As medicine continues to advance and prevention education grows, we may see a reduction in death rates from these diseases. A good approach to lowering your risk of any of these conditions is to live a healthy lifestyle with good nutrition and exercise.

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