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10 Most Common Lethal Diseases
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10 Most Common Lethal Diseases

With time our world becomes more and more sick. It concerns earth, air, and people. As the technical progress goes on, people however continue to die from diseases. By the way, most of top deathly disorders can be prevented or cured, if detected in time. Still, many factors (and our everyday busyness and rush is one of them) influence our health and keep us from regular check-ups. Read the list of 10 most common lethal diseases and find out whether you are at the risk group.

1. Ischaemic Heart Disease

It occurs when the part of your heart does not receive enough blood for some time and if untreated leads to heart attack. Ischeamic diseases may develop gradually, when the arteries become narrower (because of cholesterol particles, for instance), or may occur suddenly, when an artery is blocked (by a clot of blood, for example).

Risk factors: people with diabetes, obesity, high blood pressure, varicose veins, high cholesterol level.

2. Cancer

Actually, this includes various kinds of cancers, most common of which are prostate cancer, lung cancer, colorectal cancer, breast cancer (female). The highest index of deaths was estimated among patients with lung cancer (160,340 in 2012). The most common reason of death is the late stage when the disease cannot be cured. Some kinds of cancer can progress almost without symptoms until it's too late. The only way out is regular check-ups.

Risk factors (lung cancer): smoking, exposures to gas or chemicals, genetic predisposition; (prostate cancer): obesity, smoking, sexually transmitted diseases, inflammation of prostate; (colorectal cancer): diabetes, genetic predisposition, inflammatory bowel disease, alcohol addiction; (female breast cancer): genetic predisposition, benign breast conditions, previous chest radiation, hormone therapy, obesity.

3. Cerebrovascular Disease

Commonly called stroke, this disease is caused by the interruption of blood flow to the brain. If brain cells do not receive oxygen for a few seconds, they start dying. Strokes require immediate medical help, in other case it may lead to paralysis and death.

Risk factors: diabetes, atherosclerosis, high blood pressure, obesity, smoking.

4. Lower Respiratory Infections

To such diseases belong pneumonia, bronchitis, lung abscess. Symptoms of lower respiratory infections may resemble simple cold or flu. Ill people do not pay much attention to such diseases, while uncured pneumonia can cause serious complications that lead to death. Children are more susceptible to respiratory diseases.

Risk factors: smoking, obesity, some chronic lung and heart illnesses, exposure to certain chemicals.


AIDS is the late stage of human immunodeficiency virus (HIV). This disease weakens immune system, and with time it cannot fight any virus, so any, even not serious disease, may become lethal. As you probably know, the cure for HIV is still not found.

Risk factors: unprotected sex, sexually transmitted diseases, use of intravenous drugs, birth or breastfeeding from infected mother.

6. Chronic Obstructive Pulmonary Disease

COPD is the narrowing of airways due to bronchitis, emphysema, or other lower respiratory diseases. Diagnosed too late, COPD may be fatal, because lungs stop functioning normally (sometimes lung transplantation may help).

Risk factors: smoking, exposures, autoimmune disease, respiratory inflammations.

7. Perinatal Conditions

Even in our modern world with highly developed medicine women die during childbirth (or from conditions related to it). Most commonly, these are complications of pregnancy, childbirth and abortion, such as severe bleeding, infections, eclampsia, obstructed labor.

Risk factors: high blood pressure, diabetes, kidney diseases, obesity, reproductive abnormalities.

8. Diarrheal Diseases

It may sound strange, but diarrhea also belongs to lethal diseases. Just think, chronic diarrhea which last not for several days, but for weeks or even months, if untreated, can cause general severe dehydration and death.

Risk factors: food poisoning, specific diet, some types of infections, irritable bowel syndrome, some autoimmune diseases.

9. Tuberculosis

This disease is bacterial infection that affects lungs (may influence other organs as well). It is spread through the air, when ill people cough or sneeze. Most cases of tuberculosis are latent, however, 10% of active disease cases, if untreated, lead to death. The best way to diagnose and early treat tuberculosis is regular chest X-ray.

Risk factors: diabetes, chemotherapy, some kinds of drugs, smoking and alcohol addiction, HIV/AIDS.

10. Malaria

This disease is caused by a parasite which is transmitted by infected mosquitoes. In a human body parasites multiply quickly and affect red blood cells. The problem is common for tropical and subtropical areas.

Risk group: citizens of African countries, Indian sub-continent, some islands, travelers.

Most of listed diseases have smoking and obesity as risk factors. These problems, comparatively easily avoided, are often the causes of lethal cases. And logical question emerges: why people living in well-developed countries, educated and more or less wealthy, turn out to be so foolish? Why can't we exclude at least two reasons of many serious diseases, reasons that we can and must be avoided?

Street Talk

Like the article David. Thanks for sharing it !

  about 8 years ago
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