Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings PowerPoint ® Lecture Slide Presentation prepared by Michael Hall Cancer:

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A large group of diseases characterized by the uncontrolled growth and spread of abnormal cells people a day die from cancer in the US!
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Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings PowerPoint ® Lecture Slide Presentation prepared by Michael Hall Cancer: Reducing Your Risk

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings An Overview Of Cancer  2012, approximately 1,638,910 Americans died of cancer  1/3 of cancers are related to poor nutrition, physical inactivity, and obesity – preventable causes

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings What Is Cancer?  Cancer – a large group of diseases characterized by the uncontrolled growth and spread of abnormal cells  Tumor – clumping of abnormal cells Malignant – cancerous (will spread) Metastasis-to spread Benign – noncancerous (will not spread)

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings What Causes Cancer?  External Factors – chemicals, radiation, viruses, and lifestyle  Internal Factors – hormones, immune conditions, and inherited mutations  Theories Cellular change/mutation theories Carcinogens Oncogenes

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings Factors Believed to Contribute to Global Causes of Cancer Figure 16.2

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings Biological Factors  Some cancers such as breast, stomach, colon, prostate, uterus, ovaries and lung appear to run in families  University of Utah research suggests that a gene for breast cancer exists  A rare form of eye cancer appears to be transmitted genetically from mother to child

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings Skin Cancer  Long term effects of sun exposure can result in skin cancer  Malignant melanoma, deadliest form of skin cancer  Sun give off 3 types of harmful rays: UVA UVB UVC  Prevention: limit exposure to harmful UV rays, drink more fluids than usual, apply cool compresses to skin, moisturize skin

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings Skin Cancer – cont.  What to look for – The ABCD rule Asymmetry – half of mole does not look like the other half Border irregularity – the edges are uneven Color – pigmentation is not uniform Diameter – greater than 6mm

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings Cancer behave-differently-from-healthy-ones-george- zaidan#review behave-differently-from-healthy-ones-george- zaidan#review Play Video˚ Play Video˚ | Cancer

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