HUMAN NUTRITION

Detailed explanation-1: -Cancer is a large group of diseases that can start in almost any organ or tissue of the body when abnormal cells grow uncontrollably, go beyond their usual boundaries to invade adjoining parts of the body and/or spread to other organs.

Detailed explanation-2: -Usually, cells die when they get too old or damaged. Then, new cells take their place. Cancer begins when genetic changes interfere with this orderly process. Cells start to grow uncontrollably. These cells may form a mass called a tumor.

Detailed explanation-3: -Cancer can start anywhere in the body. But all cancers are characterized by the uncontrolled growth of abnormal cells. Under normal conditions, cell reproduction is carefully controlled by the body. However, these controls can malfunction, allowing abnormal cells to crowd out normal cells.

Detailed explanation-4: -Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.

Detailed explanation-5: -Although cancer is often referred to as a single condition, it actually consists of more than 100 different diseases. These diseases are characterized by uncontrolled growth and spread of abnormal cells. Cancer can arise in many sites and behave differently depending on its organ of origin.