Question: What Are The Most Common Diseases?

What is the number one killer in the world?

Cardiovascular disease is the top cause of death globally.

In the map we see death rates from cardiovascular diseases across the world..

Why do viruses make us sick?

Viruses make us sick by killing cells or disrupting cell function. Our bodies often respond with fever (heat inactivates many viruses), the secretion of a chemical called interferon (which blocks viruses from reproducing), or by marshaling the immune system’s antibodies and other cells to target the invader.

What causes most deaths in the world?

The leading causes of death in the world – can they be cured?Lower respiratory infections.Chronic obstructive pulmonary disease (COPD) … Lung cancer, trachea and bronchus. … Diabetes. … Alzheimer’s disease. … Diarrhoeal diseases. … Tuberculosis (TB) … Road accidents. Tragically, as many as 1.3 million deaths are a result of road accidents every year. … More items…

What are the symptoms of a viral infection?

The signs and symptoms of a viral infection depend on what virus you have and how it affects your body. Here are a few examples: Influenza: Fever….Stiff neck.Headache.Fever.Nausea and vomiting.Rash.Sensitivity to light (photophobia)Confusion.

What has killed the most humans in history?

Wars and armed conflicts with highest estimated death tolls of 100,000 or moreEventLowest estimateFromSecond World War50,000,0001939Three Kingdoms36,000,000184Mongol conquests3,000,000 (minimum estimate ever cited)1206European colonization of the Americas8,400,000149247 more rows

How do new diseases start?

The three most common factors associated with the emergence of diseases are: changes in land use for agricultural practices. changes in human demography, such as population growth and urbanisation. poor population health and health services.

How do you fight a virus?

For most viral infections, treatments can only help with symptoms while you wait for your immune system to fight off the virus. Antibiotics do not work for viral infections. There are antiviral medicines to treat some viral infections. Vaccines can help prevent you from getting many viral diseases.

How many humans die each year?

How many die each year? The first chart shows the annual number of deaths over the same period. In 2015 around 57 million people died. The world population therefore increased by 84 million in that year (that is an increase of 1.14%).

What are the top 10 most common diseases?

Heart disease. Share on Pinterest Many of the top 10 causes of death are preventable through lifestyle changes and regular checkups. … Cancer. Deaths in 2017: 599,108. … Unintentional injuries. … Chronic lower respiratory disease. … Stroke and cerebrovascular diseases. … Alzheimer’s disease. … Diabetes. … Influenza and pneumonia.More items…•

What are the 5 most common infectious diseases?

Infectious diseases can be any of the following:Chickenpox.Common cold.Diphtheria.E. coli.Giardiasis.HIV/AIDS.Infectious mononucleosis.Influenza (flu)More items…

What are the top 5 common viral infections?

Other common viral diseases include:Chickenpox.Flu (influenza)Herpes.Human immunodeficiency virus (HIV/AIDS)Human papillomavirus (HPV)Infectious mononucleosis.Mumps, measles and rubella.Shingles.More items…

What is the most common virus in the world?

Hepatitis B: Approximately 2 billion people are infected with the hepatitis B virus (HBV), making it the most common infectious disease in the world today.

What is the deadliest disease ever?

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.

What are common viruses?

These include:smallpox.the common cold and different types of flu.measles, mumps, rubella, chicken pox, and shingles.hepatitis.herpes and cold sores.polio.rabies.Ebola and Hanta fever.More items…•