The Top 10 Deadliest Diseases in the World

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Top 10 Deadliest Diseases in the World

When people think about the deadliest disease, it is mostly about the serious ones. However, these diseases do not even comprise in the list of WHO, i.e. the World Health Organization. The interesting fact is that even the deadliest diseases are curable with necessary steps.

In this blog, we have mentioned down top 10 deadliest diseases in the world. To find out more, keep scrolling!

1. Ischemic Heart Disease


The first and the most fatal disease in the world is Ischemic Heart Disease. It is also known as coronary artery disease (CAD). When the blood vessels that transmit the blood to the heart are contracted then coronary artery disease takes place. If not examined at an early stage, then the patient has heart failure, chest pain, and irregular heartbeat known as arrhythmias.

Even though it is the deadliest disease in the world, the mortality rates have diminished in few countries. Yet, in many other nations, the condition is increasing rapidly. The leading cause is due to the lifestyle factors that play an essential role.

Risk Factors of CAD

  • Obesity or overweight
  • High blood pressure
  • Cholesterol
  • Smoking and drinking
  • Diabetes
  • Genetic or family history of CAD

Prevention of CAD

2. Stroke


When an artery is blocked or perhaps leaking in your brain that’s when a stroke happens. Due to which the oxygen-deprived cells die within seconds. When a stroke occurs, your body goes numb, and you can neither walk nor see properly. Besides, if you don’t cure it at the right, time then it can cause lasting disability.

Risk Factors of Stroke

  • Smoking
  • High blood pressure
  • High cholesterol
  • Having a family history
  • Overweight
  • Heart diseases

Prevention of Stroke

  • Eating a healthy and balanced diet
  • Being active and working out
  • Quit Smoking
  • Maintain proper weight
  • Get clinical trials every year
  • Take necessary medications

3. Lower Respiratory Infections


A lower respiratory infection is in the airways, lungs and the bronchial tubes. The viruses are the primary reason for the diseases. Coughing is considered the underlying symptom of the lower respiratory tract infection. Additionally, shortness of breath, wheezing sound, and chest tightness are symptoms.

Risk Factors of Lower Respiratory Infections

  • Smoking
  • Weak Immune system
  • Allergic to animals, birds, pollution and more
  • Poor air quality
  • Lung irritants
  • Asthma
  • HIV

Prevention for Lower Respiratory Infections

  • Maintain clean hygiene
  • Quit smoking
  • Wear the mask while travelling
  • Get vaccine
  • Wash hands now and then

4. Chronic Obstructive Pulmonary Disease aka COPD


According to a survey in 2004, 64 million suffered from COPD that is Chronic Obstructive Pulmonary Disease. It is lasting lung disease that makes it difficult for the patient to breathe. There’s no treat for the COPD, but with the regular usage of the medication, one can feel relief.

Risk Factors of COPD

  • Excessive Smoking
  • Family history linked to COPD
  • Chemicals harmful for lungs
  • Pollution
  • Alpha 1 Deficiency
  • Asthma

Prevention of COPD

  • Quit Smoking
  • Wear the mask while travelling
  • Avoid dust, lung irritants, chemicals fumes, and other.

5. Respiratory Cancers


Respiratory cancer includes trachea, bronchus, larynx, and lungs. The main reason for the respiratory cancers is excessive smoking, environmental toxins, and lung irritants. Additionally, the household molds, dust is also the cause of respiratory disease.

Risk Factors of Respiratory Cancer

Even though, respiratory cancer can affect anyone. The cases are more active for the addictive smokers and usage of tobacco.

  • Smoking
  • Consumption of tobacco
  • Second-hand smoke
  • Lung irritants

Preventions for Respiratory Cancer

  • Avoid fumes
  • Workout
  • Eat healthy food

6. Diabetes Mellitus


Diabetes is considered to be the most dangerous and threatening disease. It’s a type of illness that affects the secretion of insulin — there two types of diabetes. In type 1 the pancreas doesn’t produce insulin whereas in type 2 diabetes there’s not much production of insulin.

Risk factors of Diabetes

  • Excess weight
  • Unhealthy food
  • Not exercise
  • High blood pressure
  • Heredity

Prevention of Diabetes

  • Doing yoga and training
  • Avoiding junk and sugary food
  • Adding more fiber to the diet

7. Alzheimer’s Disease


Alzheimer’s disease is also known as Dementia that causes the loss of memory. Nevertheless, there’s more than memory loss. In fact, there is the loss of life as well. According to the survey, the number of deaths in the USA increased due to the Dementia.

The initial symptoms of the disease begin with the little loss of memory, unable to recall the moments. Eventually, you end up forgetting everything and may not have a memory for the more extended period.

Risk Factors of Alzheimer

  • Family history
  • Age more than 65
  • Unhealthy lifestyle and food
  • Head trauma

Prevention for Alzheimer

Currently, there is no cure for the disease. Although, the doctors recommend to have a healthy diet and working out. Indulge in good fats like fruits, nuts, fish and other options. It will reduce the risk of heart disease and sharpen your memory. The doctors are working on finding the preventive measures and medication for the Alzheimer.

8. Dehydration due to Diarrhea


Diarrhea is the disease that causes you to pass the loose stool for twice or thrice in a day. If it lasts more than three days, then the level of water reduces in the body thereby dehydration causing death.

The core reason for the diarrhea is the raw food and water that transmits the weak bacteria and viruses into the intestine. It’s more observed in the countries having worse sanitation condition.

Risk Factors of Diarrhea

  • Unhealthy food
  • Malnutrition
  • Children mostly suffer through diarrhea
  • Deprived immune system

Prevention of Diarrhea

  • Practice best hygiene possible
  • Wash hands with the sanitization now and then
  • Improve water quality by boiling it

9. Tuberculosis


Tuberculosis known as TB is caused by the bacteria Mycobacterium tuberculosis.  It is a treatable condition, but it is top causes among HIV patients.

Risk Factors of Tuberculosis

  • Coming in contact with TB person
  • Low body weight
  • Poor immune system
  • Diabetes
  • HIV

Prevention of Tuberculosis

Ideally, the better way of preventing the tuberculosis is to practice healthy hygiene and get the Bacillus Calmette – Guerin vaccine (BCG). You can also take the required medications.

10. Cirrhosis


The long-term damage to the liver results into cirrhosis. There are multiple reasons for the damaged organ. It could be due to Hepatitis, kidney disease or even alcoholism. If you have a healthy liver, then it will transmit pure blood to the body. When the scar tissues start developing, the liver needs to work harder to work properly, thereby causing the liver to stop working!

Risk factors of Tuberculosis

  • Alcohol
  • Fatty liver disease
  • Kidney disease
  • Hepatitis

Prevention of Tuberculosis

  • Avoid alcohol
  • Low sugar and fat in food
  • Eat healthy fruits and vegetables
  • Do not share needles, razors, toothbrushes or anything with a patient of Hepatitis

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