Cancer is a class of diseases in which a group of cells display uncontrolled growth, invasion, and sometimes metastasis. These three malignant properties of cancers differentiate them from benign tumors, which are self limited, and do not invade or metastasize.
Most cancers form a tumor but some, like leukemia, do not. The branch of medicine concerned with the study, diagnosis, treatment, and prevention of cancer is oncology.
Cancer affects people at all ages with the risk for most types increasing with age. Cancer caused about 13% of all human deaths in 2007 7.6 million.
Cancers are caused by abnormalities in the genetic material of the transformed cells. These abnormalities may be due to the effects of carcinogens, such as tobacco smoke, radiation, chemicals, or infectious agents. Other cancer promoting genetic abnormalities may randomly occur through errors in dna replication, or are inherited, and thus present in all cells from birth.
Most of us know someone who has or had cancer a relative, a friend, a neighbour. Some of us know people who have or had cancer and we do not even know it. And then there are people we do not know but who we know of, people whose stories we know.
A celebrity or famous people is a person who is famously recognized in a society or culture.
Generally speaking, a famous people is someone who gets media attention and most frequently has an extroverted personality. There are a wide range of ways people can become famous, from their profession, appearances in the mass media, beauty or even by complete accident or infamy.
famous people is the term that is used when someone becomes a celebrity. In some places, someone that somehow achieves a small amount of transient fame through hype or mass media. Often the stereotype extends to someone that falls short of mainstream or persistent fame but seeks to extend or exploit it. In the 21st Century.
The rise of international celebrities in acting and popular music is due in large part to the massive scope and scale of the media industries, enabling celebrities to be viewed more often and in more places.
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