Top 5 diseases worldwide

25 Jan 2016

Although the proportion of deaths due to non-communicable diseases is declined in developed countries with the rise of contemporary medical procedures and medicines, but frequency of recurring diseases is still striking in developing countries.According to WHO, 38 million of the 56 million global deaths in 2012 were due to NCDs. Following will elaborate the information on top 5 deadliest diseases around the whole world.

Trachea, bronchus, and lung cancer are all respiratory tract cancers. The most common symptoms are coughing (including coughing up blood), weight loss, shortness of breath, and chest pains.

The vast majority (85%) of cases of lung cancer are due to long-term exposure to tobacco smoke. About 10–15% of cases occur in people who have never smoked.These cases are often caused by a combination of genetic factors and exposure to radon gas, asbestos, or other forms of air pollution, including second-hand smoke.

 Lung cancer may be seen on chest radiographs and computed tomography (CT) scans. The diagnosis is confirmed by biopsy, which is usually performed by bronchoscopy or CT-guidance.

Treatment and long-term outcomes depend on the type of cancer, the stage (degree of spread), and the person's overall health, measured by performance status. Common treatments include surgery, chemotherapy, and radiotherapy.