What is cancer and under what conditions it develops in human body ?
There is no single or easy answer to that question. Each cancer type is a bit different and the conditions that lead to it are widely varied and complicated. Breast cancer, for example - some are genetically linked through inheritance, most others are not. Those that are not are hard to dissect - they result from genetic mutations that occur during the person's lifetime.
Let me try to explain brief. Usually mitosis or cell division occurs under the control of system inside the body. This system controls the division and ensures the division only when needed. Even if this system fails, there is a lot of additional safety methods to prevent the division uncontrollably. A cell became cancerous when all these safety methods fails. Actually cancer begins in genes and the mutations cause the cell to malfunction. In order to become cancerous a cell must undergo three to seven mutations. The genetic mutations take lot of years to accumulate, but the encounter of mutations makes the cell to become cancerous.
Good Question....Two good answer's below, sorry can't improve on them........
My thanks to both dinkan53 and Kris Heeter to answer this question. Let us try to answer this question by ignoring Genetics and considering other factors only viz. Eating habits, Lifestyle, environment etc. I noticed in Dinkan53's hub on acidity, he mentions 'AMA' (toxins, result of indigestion) and resultant ' shutting down of a cell'. So, I request Dinkan53 to consider 'AMA' in respect to development of cancer. Further, I request both the hubbers to consider Ph balance of human body. What role Ph balance plays in development of cancer ? Also, how low levels of quantity and quality of oxygen affect human body ?
Cancer can be idiopathic - unknown reasons for developing or familial/hereditary.
Most cancer cells develop under certain conditions but the number one known contributor is Stress.
Prolonged stress promotes oxidation of the cellular proteins, which makes these cells mutate, forming into cancer cells. Increased stress suppresses the body's immune system, further providing a good environment for the cancer cells to mutate and metastasize or branch out from their focal point of invasion.
Hope this helps.
Cancer is not necessarily uncontrolled mitosis. Equally, a failure of Apoptosis (cell death) can be responsible. The human body makes 60million cells per day by mitosis. If apoptosis were to be disrupted, the result would be the same as if mitosis had spiralled out of control
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