Non-communicable diseases: Non-communicable diseases are also known as non- infectious or non-transmittable diseases. Those diseases which do not spread from person to person by contact or through pathogens or germs. Some non- communicable diseases are as follows.
1. Heart disease: It is also known as coronary disease. It is the main cause of death in the 20th century. Heart disease is caused by hardening and blockage of coronary arteries.
a. Angina pectoris: It is characterised by severe and persistent chest pain.
b. Coronary thrombosis: It involves the formation of a blood clot called thrombus, in the coronary artery. It is characterised by severe chest pain, breathlessness, uneasiness and vomiting.
2. Diabetes: In this disease, the percentage of glucose increases in the blood very much and glucose also comes out with urine. It occurs due to deficiency of insulin hormone. Diabetes affects eyes, kidney and heart.
The main symptoms of diabetes are as follows:
(i) Presence of glucose in urine
(ii) Presence of more glucose in the blood.
(iii) Excessive urination
(iv) Loss of body weight.