The 10 Diseases Most Fatal

According to the World Health Organization, at the top of the diseases most fatal are cardiovascular diseases. In 2012 alone, they have killed 17.5 million people.

Most Fatal Diseases

On the podium of the diseases most fatal in the world are ischaemic heart disease, followed by cerebrovascular accident (STROKE) and infections of the lower respiratory tract. Non-communicable diseases were responsible for 68% of all deaths in the world in 2012. The four main noncommunicable diseases are cardiovascular diseases, cancer, diabetes and chronic lung disease. Communicable, neonatal, maternal and nutrition were responsible for 23% of deaths in the world and accidents for 9% of all deaths, according to 2012 data.



The ischaemic heart disease is responsible for 7.4 million deaths and is the largest killer in the world. It is the result of atherosclerosis, that is, when depositing in the arteries, debris that impede the flow of the blood and disturb the heart rhythm. The closely of the arteries can cause myocardial infarction or angina pectoris. High blood pressure, diabetes, smoking and high cholesterol are the major contributors. However, daily physical exercise, a balanced diet, and weight under control, help to reduce the risk.


When an artery in the brain is blocked or leaks, give it a stroke. If deprived of oxygen, brain cells begin to die within minutes and the damage may be irreversible. In 2012, died in the 6.7 million people of STROKE.The factors are similar to the previous ones, so pay attention to blood pressure, to diabetes, to high cholesterol, stop smoking, control weight and take a daily walk.


The tobacco is the main cause of this disease and, as the previous ones, can be avoided. The airway obstruction is progressive, and it is possible that does not take account of the symptoms until it is already advanced. Be aware of the cough and the expetoração chronic what are the first symptoms followed by shortness of breath and fatigue when you breathe. Although chronic, that is, without a cure, can prevent the progression of the disease or prevent the appearance of: you can start by stop smoking.


Worldwide, 3.1 million people die of diseases in the lungs, the alveoli of the lungs, trachea, bronchi and bronchioles. This group of diseases includes pneumonia, bronchitis or the flu. Eat well to keep your immune system high, hydrate yourself, exercise, dress warmly but ventilate the house or the office to avoid the concentration of bacteria.


Cancer of the trachea, bronchus and lung is the fifth disease more fatal in the world, being responsible for the death of 1.6 million people across the globe, about 2.9% of all deaths. Smoking, passive smoking and environmental toxins are the main causes.


HIV is a virus that attacks the immune system and can cause AIDS – acquired immune deficiency syndrome, a chronic disease for the rest of your life. Already nearly 39 million people have died due to this disease. In 2012 alone, there were 1.5 million. The condom is the most effective way of preventing sexually transmitted diseases in any sexual relation (anal, vaginal and oral).


If you have diarrhea that lasts more than a few days, the body loses a lot of water, salt and may die from dehydration. Diarrhea is an infection of the bowel transmitted by viruses, bacteria or parasites present in water or contaminated food. Is responsible for killing 1.5 million people. Healthy behaviors, such as washing your hands well can reduce the incidence of diarrhoeal disease by 40%, better sanitary conditions and water and a medical intervention early makes a difference.


Diabetes affects the production and use of insulin. In type 1 diabetes, the pancreas fails to produce insulin. In type 2 diabetes, the pancreas does not produce enough insulin, or it produces can’t be used effectively. In this case, a poor diet, lack of exercise, and excess pounds can be a source of disease. Once again, a balanced diet and daily physical exercise can prevent this and other diseases.


The road accidents are not a disease, but they occupy the ninth place in the list of the causes most fatal in the world. In 2012, the second data from the World Health Organization, killed 1.3 million people on the road. A defensive driving, respecting the traffic signs, the other drivers and not driving under the influence of drugs or alcohol to help reduce this number.


High blood pressure causes a stress on the heart because it forces you to work harder to pump the blood through the arteries. The heart disease is hypertensive is one of the main causes of heart attack, stroke, and is the tenth disease more fatal in all over the world. The excessive intake of alcohol, tobacco, eating disorderly, and physical inactivity are the main causes.