Which is the world's most dangerous disease? Why?

 Top 5 world`s most dangerous diseases

1. Ischemic heart disease or ischemic heart disease

The most deadly disease in the world is coronary heart disease (CAD). Also known as coronary heart disease, CAD occurs when the blood vessels that supply blood to the heart become narrowed. Untreated CAD can lead to chest pain, heart failure, and arrhythmias.

Global impact of CAD. Although it is the leading cause of death, the death rate has decreased in many European countries and the United States. This could be due to public health education, access to health care, and better forms of prevention. However, mortality from CAD is increasing in many developing countries. Increasing life expectancy, socioeconomic changes, and lifestyle risk factors all play a role in this increase.

Risk factors for CAD include:

High blood pressure High cholesterol Smoking Family history of CAD Diabetes Being overweight Talk to your doctor if you have one or more of these risk factors. You can prevent CAD with medication and by maintaining good heart health. Some steps you can take to reduce your risk include:

Exercise regularly Maintain a healthy weight Eat a balanced diet low in sodium and high in fruits and vegetables Avoid smoking Drink only in moderation

2. Stroke

A stroke occurs when an artery in the brain becomes blocked or leaky. This causes the brain cells, which are deprived of oxygen, to begin to die within minutes. During a stroke, you suddenly feel numb and confused or have trouble walking and seeing. If left untreated, a stroke can cause long-term disability. Risk factors for stroke include:

High blood pressure Family history of stroke Smoking, especially in combination with birth control pills Being African American Being female Some risk factors for stroke can be minimized with preventive care, medications, and lifestyle changes. In general, healthy habits can reduce the risk of disease.

 3. Lower respiratory tract infection

A lower respiratory tract infection is an infection of the respiratory tract and lungs. Diseases can be caused by:

Influenza or influenza, Pneumonia, Bronchitis, Tuberculosis, and Viruses commonly cause lower respiratory tract infections. They can also be caused by bacteria. A cough is the main symptom of a lower respiratory tract infection. You may experience shortness of breath, wheezing, and chest tightness. Untreated lower respiratory infections can lead to respiratory failure and death.

Risk factors for lower respiratory tract infections include:

Influenza Poor air quality or frequent exposure to lung irritants Smoking Weak immune system Overcrowded childcare facilities that mainly affect infants Asthma HIV One of the best preventative measures you can take against lower respiratory tract infections is to get an annual flu shot. Wash your hands often with soap and water to avoid spreading germs, especially before touching your face and before eating. Stay home and rest until you feel better if you have a respiratory infection, as rest improves the healing process.

4. Chronic obstructive pulmonary disease

Chronic obstructive pulmonary disease (COPD) is a long-term, progressive lung disease that causes breathing difficulties. Chronic bronchitis and emphysema are types of COPD. In 2004, there were about 64 million people living with COPD worldwide. Risk factors for COPD include:

Cigarette smoking or secondhand smoke Lung irritants such as chemical fumes Family history, with the AATD gene linked to COPD History of respiratory tract infections in childhood COPD, cannot be cured, but its progression can be slowed with medication. The best way to prevent COPD is to stop smoking and avoid secondhand smoke and other lung irritants. If you experience any of these COPD symptoms, getting treatment as soon as possible will improve your outlook.

 5. Cancer of the trachea, bronchus, and lungs

Cancers of the respiratory tract include cancer of the trachea, larynx, bronchus and lung. The main cause is smoking, inhalation of second-hand smoke, and toxins from the environment. But household pollution, such as fuel and mold, also contributes.

A 2015 study reported that respiratory cancer accounts for about 4 million deaths annually. In the developing world, scientists predict an 81 to 100 percent increase in respiratory cancers due to pollution and smoking. Many Asian countries, especially India, still use coal for cooking. Emissions from solid fuels are responsible for 17% of lung cancer deaths in men and 22% in women.

Cancers of the trachea, bronchus, and lungs can affect anyone but are more likely to affect people who have smoked or used tobacco in the past. Other risk factors for these cancers include family history and exposure to environmental factors such as diesel fumes.

Aside from avoiding smoke and tobacco products, it is not known if anything else can be done to prevent lung cancer. However, early detection can improve the condition and reduce the symptoms of respiratory cancer.