[[File:Europe map.png|thumbnail|250px|left|The [[World Health Organization]] declares concerning [[secular Europe]]: "[[Europe]] comprises only one eighth of the total world population but has around one quarter of the global total of [[cancer]] cases with some 3.7 million new patients per year."<ref>[http://www.euro.who.int/en/health-topics/noncommunicable-diseases/cancer/data-and-statistics World Health Organization - Cancer statistics for Europe]</ref>]]
[[Mutation]]s result from errors during the [[DNA]] replication process or other types of damage to DNA (such as may be caused by exposure to carcinogens or radiation).
[[Mutation]]s result from errors during the [[DNA]] replication process or other types of damage to DNA (such as may be caused by exposure to carcinogens or radiation).
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[[File:Europe map.png|thumbnail|250px|right|The [[World Health Organization]] declares concerning [[secular Europe]]: "[[Europe]] comprises only one eighth of the total world population but has around one quarter of the global total of [[cancer]] cases with some 3.7 million new patients per year."<ref>[http://www.euro.who.int/en/health-topics/noncommunicable-diseases/cancer/data-and-statistics World Health Organization - Cancer statistics for Europe]</ref>]]
According to the National Cancer Institute:
According to the National Cancer Institute:
{{Cquote|Cancer is a genetic disease—that is, cancer is caused by certain changes to genes that control the way our cells function, especially how they grow and divide....
{{Cquote|Cancer is a genetic disease—that is, cancer is caused by certain changes to genes that control the way our cells function, especially how they grow and divide....