Hey,
Cancer is a non-infectious disease and yet it is a major cause of death all over the globe. Cancer cells are dead-opposite of normal cells, i.e., they lack cristae in mitochondria, has abnormal cell cycle, are immortal, etc.
The cancer cells present in a patient will continuously divide without maturation of cells, forming a large mass of cells called ‘tumours’. As there is the presence of oxygen and food-particles within the host cell, the cancer cells sucks out the food-particles and will be affecting the normal cells.
As this continues, the tumours will spread all over the body, besides it makes the patient to suffer.
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As the tumour spreads, the quantity of normal cells will be less as compared to infected cells. Hence, as a person can not withstand the pain (underarm pain, weakening of body, etc), the person will die.
Thanks. Hope you are clear.
