Tobacco at fault essay

And this is no exception to that rule. Like most flakes they retain moisture very well so it would be a good idea to let this dry out for at least 20 minutes if not more.

Tobacco at fault essay

Tobacco at fault essay

Cancer has become the second-most killer disease today, killing about seven to eight million people every year in the world.

It refers to a class of diseases characterized by out-of-control cell growth. There are over different types of cancer, and each is classified by the type of cell that is initially affected. The disease harms the body when damaged cells divide uncontrollably to form lumps or masses of tissue called tumours except in the case of leukaemia where cancer prohibits normal blood function by abnormal cell division in the blood stream.

Tumours can grow and interfere with the digestive, nervous or circulatory systems and they can release hormones that alter body function. Tumours that stay in one spot and demonstrate limited growth are generally considered to be benign.

More dangerous or malignant tumours form when two things occur: When a tumour successfully spreads to other parts of the body and grows, invading and destroying other healthy tissues, it is said to have metastasized a serious condition that is very difficult to treat.

In other words, cancer is the result of cells that uncontrollably grow and do not die. They differ from normal cells in the body which follow an orderly path of growth, division, and death.

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Cancer begins to form when the process of programmed cell death called apoptosis breaks down. Unlike regular cells, cancer cells do not experience programmatic death and instead continue to grow and divide, leading to a mass of abnormal cells that grows out of control.

Cells can experience uncontrolled growth if there are damages or mutations to DNA, and therefore, damage to the genes involved in cell division.

Four key types of gene are responsible for the cell division process: Cancer occurs when a cell's gene mutations make the cell unable to correct DNA damage and unable to commit suicide.

Similarly, cancer is a result of mutations that inhibit oncogene and tumour suppressor gene function, leading to uncontrollable cell growth. Classes of substances that are directly responsible for damaging DNA, promoting or aiding cancer are carcinogens.

Tobacco, asbestos, arsenic, radiation such as gamma and x-rays, the sun, and compounds in car exhaust fumes are all examples of carcinogens. When our bodies are exposed to these carcinogens, free radicals are formed that try to steal electrons from other molecules in the body.

Theses free radicals damage cells and affect their ability to function normally. Cancer can also be the result of a genetic predisposition that is inherited from family members.

Tobacco at fault essay

It is possible to be born with certain genetic mutations or a fault in a gene that makes one statistically more likely to develop cancer later in life. Age is an important risk factor for cancer as the number of possible cancer-causing mutations in our DNA increases with age.

Several viruses have also been linked to cancer such as: Human immunodeficiency virus HIVthat suppresses or weakens the immune system, inhibits the body's ability to fight infections and increases the chance of developing cancer.

The symptoms of cancer are quite varied and depend on where it is located, where it has spread, and how big the tumour is. Some cancers can be felt or seen through the skin.

For example, a lump on the breast or testicle can be an indicator of cancer in those locations. Skin cancer or melanoma is often noted by a change in a wart or mole on the skin.

Some oral cancers present white patches inside the mouth or white spots on the tongue.Essay writers review brubaker movie essay essay writing in details linnalan koulu rhetorical essay.

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