The 11 Top Deadliest Diseases in the World

For centuries now, the human race has been fighting various diseases, conquering some and being helpless against others, which still continue take toll of millions of lives around the world every year. Many of the deadliest diseases are fortunately preventable, but steps need to be taken to wage a war against them on a massive scale.

Here is the list of top 10 deadliest diseases in the world:

11. Ebola

A more recent disease which has caused havoc in the world is Ebola Virus, which is characterized by symptoms like fever, sore throat, headache, muscular pains, vomiting and diarrhea, followed by internal and external bleeding, slow working of kidneys and liver and finally death. The life threatening epidemic first broke out in 1976 in Zaire. In 2014, an outbreak in West Africa took a toll of more than 6000 lives and had around 17000 people infected with the virus.

10. Tuberculosis

Featuring next on the list of deadliest disease is tuberculosis (TB), a bacterial lung disease. Many of these bacterial strains are resistant to medication. Nearly 900,000 people died of the disease in 2012.

9. Premature Labor and Related Complications

Premature labor and childbirth caused nearly 1.1 million deaths in 2012, three quarter of which were of children aged less a week. Most of them occur in developing countries, where medical facilities are not advanced.

8. Diabetes Mellitus

Next on the list of top 10 deadliest diseases in the world is diabetes mellitus, which is linked with faulty insulin production by the pancreas. While the cause of type1 diabetes is not known, type2 diabetes is attributed to poor diet, unhealthy lifestyle and obesity. The disease claimed nearly 1.5 million lives in 2012.

7. Diarrhea

Generally speaking, diarrhea may seem to be a simple condition, involving repeated loose motions, but it becomes life threatening when the patient gets dehydrated. The disease took toll of more than 1.5 million lives in 2012, which made 2.7% of the death toll. Children are major victims of the disease, which is caused due to stomach infections, unclean water and lack of hygiene.


One of the deadliest diseases in the world is HIV/AIDS, which has killed more than 39 million till date. The death toll in 2013 was 1.5 million, accounting as 2.7% of the total number of deaths from disease this year. Statistics point to the fact that the disease victimizes 5700 people every day, including men, women and children. It is transmitted through unsafe sex, blood transfusions and infected syringes.

5. Bronchus, Trachea and Lung Cancer

The next name o the list is that of cancer of bronchus, trachea or lungs, which has accounted for nearly 1.6 million deaths globally in 2012, making it nearly 2.9% of the global death toll. The key factors leading to the disease are smoking and environmental pollution.

4. Lower Respiratory Infections

With a death toll of 3.1 million, nearly 5.5% of the total number of deaths, lower respiratory infections features next on the list of top 10 deadliest diseases in the world. Pneumonia, influenza and bronchitis fall under this category of diseases.

3. Chronic Obstructive Pulmonary Disease

Featuring next among the mast fatal diseases is Chronic Obstructive Pulmonary Disease (COPD), which claimed 3.1 million lives in 2012, making 5.6% of the total deaths that year. This disease attacks the lungs and slowly hampers their functioning, leading to difficulty in breathing. Smoking and pollution are the principal causes of the disease, which cannot be cured completely, but the damage can be slowed down with treatment.

2. Stroke

Killing s many as 6.7 million people around the world in 2012, stroke comes second on the list of top10 deadliest diseases. This was nearly 11.9% of all deaths around the globe. Stroke results in deprivation of brain of oxygen, causing death within moments, but healthy lifestyle couples with balanced diet can stop the disease in its tracks.

1. Coronary Artery Disease

Coronary Artery Disease, which we simply know as heart disease is the biggest killer disease of the present times, killing nearly 7.4 million people around the world in 2012, which accounted for 13.2% of the world population (as per studies by WHO). In USA alone, the annual death toll of the disease reaches up to 380,000. Balanced diet, regular exercise, medication and weight control can check the disease.

Awareness and special care can help to reduce the death toll caused by the above mentioned diseases.